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The World’s Largest Swimming Pool – San Alfonso Del Mar, Chile


Modified: December 27, 2023

by Silvana Paredes



Welcome to San Alfonso del Mar, home to the world’s largest swimming pool! Nestled in the beautiful coastal town of Algarrobo, Chile, this breathtaking resort boasts a record-breaking pool that stretches over an astonishing 20 acres. A true marvel of engineering and design, the pool has garnered international attention for its sheer size and beauty.


San Alfonso del Mar offers visitors a unique experience, blending luxury accommodations, stunning ocean views, and of course, the incredible swimming pool. Whether you’re seeking a relaxing getaway or an adventurous holiday, this resort has it all.


As you dive into this article, we’ll take you on a journey to explore the history, design, and features of this extraordinary swimming pool. Discover why it’s considered a must-visit destination and how it has become a symbol of Chilean ingenuity.


So prepare to be amazed as we dive into the depths of San Alfonso del Mar, where dreams become reality and swimming knows no bounds!


Location and Overview of San Alfonso del Mar

Situated on the central coast of Chile, San Alfonso del Mar offers a picturesque setting with stunning views of the Pacific Ocean. It is located in the town of Algarrobo, approximately 62 miles (100 kilometers) west of Santiago, the capital city of Chile.


The resort stretches along a beautiful coastline, allowing guests to enjoy the perfect combination of beachfront access and amenities. San Alfonso del Mar offers a variety of accommodation options, including luxurious apartments and hotel-style suites, ensuring that every visitor finds their ideal retreat.


Aside from its captivating swimming pool, San Alfonso del Mar also boasts pristine white-sand beaches, lush gardens, and an array of recreational facilities, making it a true paradise for those seeking relaxation and adventure.


The resort is conveniently located near various attractions, such as the Pablo Neruda Museum in Isla Negra, renowned for its connection to the beloved Chilean poet. Additionally, wine lovers can indulge in a visit to the nearby Casablanca Valley, famous for its vineyards and wine tours.


San Alfonso del Mar offers an ideal getaway for both domestic and international visitors, with Santiago’s international airport only a short drive away. This accessibility, combined with the resort’s world-class amenities, has earned San Alfonso del Mar a well-deserved reputation as one of Chile’s top destinations.


From its serene location to its luxurious offerings, San Alfonso del Mar is the epitome of coastal elegance, promising an unforgettable experience for all who visit.


History of the World’s Largest Swimming Pool

The history of the world’s largest swimming pool at San Alfonso del Mar dates back to the early 1990s when businessman and real estate developer Fernando Fischmann had a vision to create a unique coastal retreat. Inspired by his love for the ocean but faced with the challenges of unpredictable tides and cold water temperatures, Fischmann envisioned a massive pool that would offer guests the sensation of swimming in an endless sea.


Fischmann enlisted the help of a team of engineers, architects, and construction experts to turn his vision into a reality. The project began in 1997 and took nearly five years to complete. The ambitious undertaking required groundbreaking techniques and innovative engineering to overcome the obstacles of constructing such a colossal pool.


The construction of the pool involved several stages. Initially, a secure boundary wall was erected that stretched over 3,323 feet (1,012 meters) in length. Next, an excavation process began, where thousands of cubic meters of earth were removed to create the pool’s foundation.


With the foundation in place, the pool started taking shape, with reinforced concrete walls and floors formed. A high-performance plastic membrane was then installed to ensure the pool’s durability and prevent any leakage.


Once the basic structure was complete, the pool was filled with crystal-clear seawater. The water is drawn from the nearby Pacific Ocean, filtered, and treated to maintain its quality and ensure a safe swimming environment.


Since its completion in 2006, the world’s largest swimming pool at San Alfonso del Mar has captivated the imaginations of visitors from all over the world. It is a testament to the vision, perseverance, and engineering marvels that Fischmann and his team brought to life.


Today, the pool stands as an iconic attraction, synonymous with the resort and a symbol of Chilean innovation. It continues to attract tourists and is a testament to what can be achieved when imagination meets engineering prowess.


Design and Construction of the Pool

The design and construction of the world’s largest swimming pool at San Alfonso del Mar are nothing short of remarkable. The pool’s unique design, combining aesthetics and functionality, required meticulous planning and innovative engineering.


The pool stretches over an impressive 20 acres and holds a staggering 250 million liters of seawater. It is a visually striking masterpiece that mimics the appearance of a pristine lagoon, featuring turquoise waters and beautiful white-sand beaches.


One of the key challenges in constructing such a massive pool was ensuring water circulation and maintenance. To tackle this, a sophisticated system of pumps was installed, continuously circulating the water to maintain its clarity and hygiene.


To enhance guests’ experience, the pool features various sections with varying depths, allowing for different activities such as swimming, kayaking, and even small sailboat excursions. Additionally, a network of docks and walkways provide convenient access to different areas of the pool.


Another remarkable aspect of the pool’s design is its solar heating system. A series of solar panels are strategically positioned around the pool to harness the power of the sun, allowing for a comfortable and inviting temperature year-round.


The construction process involved the implementation of state-of-the-art technologies and materials. High-strength concrete was used to form the pool walls, while the plastic membrane lining provides a watertight barrier to prevent leakage.


Given the pool’s immense size, careful consideration was also given to safety measures. Lifeguard stations are strategically placed throughout the pool, ensuring the well-being of swimmers at all times.


The construction of the world’s largest swimming pool at San Alfonso del Mar stands as a testament to human ingenuity and engineering excellence. It pushes the boundaries of what is possible and showcases how innovative design and construction techniques can create truly extraordinary and awe-inspiring landmarks.


Features and Amenities

San Alfonso del Mar offers a multitude of features and amenities that make it a truly exceptional destination. Beyond the impressive swimming pool, guests can indulge in a wide range of activities and luxurious offerings.


For those seeking relaxation, the resort provides access to pristine white-sand beaches where you can sunbathe and soak up the Chilean coastal charm. Lounge chairs and umbrellas are available for your comfort, ensuring a blissful beach experience.


If you’re in the mood for some adventure, the pool itself offers an array of activities. Take a leisurely swim or rent a kayak to explore the vast expanse of the pool. Sailboats are also available, allowing visitors to sail across the tranquil waters and enjoy the breathtaking views.


In addition to the pool, the resort boasts impressive sports facilities including tennis courts, basketball courts, and soccer fields. Fitness enthusiasts can make use of the state-of-the-art gym facilities or join in group fitness classes.


For those seeking relaxation and rejuvenation, San Alfonso del Mar offers a luxurious spa where you can indulge in various treatments and massages. Unwind and pamper yourself as skilled therapists cater to your needs, creating a truly tranquil and rejuvenating experience.


Aside from the activities and amenities, San Alfonso del Mar also features a wide range of dining options. From casual beachside bars to fine dining restaurants, the resort offers gastronomic delights to suit every palate. Indulge in fresh seafood, traditional Chilean cuisine, and international dishes, all served with impeccable service and breathtaking views.


The resort also provides convenient services such as round-the-clock concierge, room service, and secure parking. Additionally, the friendly and knowledgeable staff are always at hand to assist with any inquiries or requests, ensuring that your stay is as comfortable and enjoyable as possible.


Whether you’re seeking relaxation, adventure, or a combination of both, San Alfonso del Mar offers an extensive range of features and amenities that cater to every guest’s needs. It’s a place where luxury, comfort, and unforgettable experiences come together harmoniously.


Environmental Considerations

In constructing the world’s largest swimming pool at San Alfonso del Mar, environmental considerations played a crucial role. The developers were mindful of minimizing the impact on the surrounding ecosystem and ensuring sustainable practices throughout the resort.


One of the key environmental considerations taken into account was the pool’s water source. By utilizing seawater from the nearby Pacific Ocean, the resort avoids depleting freshwater resources, reducing the strain on local water supplies. The water is carefully filtered and treated to maintain water quality and ensure the health and safety of swimmers.


To reduce energy consumption, the pool incorporates a solar heating system. The strategically positioned solar panels harness the power of the sun, providing warmth for the pool water and reducing reliance on traditional energy sources. This not only contributes to a more sustainable operation but also enhances the overall experience for guests.


The resort also prioritizes waste management and recycling practices. Efforts are made to minimize waste generation and encourage guests to participate in recycling initiatives. Additionally, sustainable materials were utilized during the construction of the pool, ensuring longevity and minimizing waste.


San Alfonso del Mar is committed to preserving the natural beauty of its surroundings. The resort features lush gardens and green spaces, providing a haven for local flora and fauna. There is a strong emphasis on maintaining the ecological balance and protecting the biodiversity of the region.


Education and awareness programs are also in place to inform guests about the importance of environmental conservation. Through signage, brochures, and activities, the resort fosters a sense of responsibility among visitors, encouraging them to be mindful of their impact on the environment.


By implementing these environmental considerations, San Alfonso del Mar strives to be a sustainable and environmentally responsible destination. The resort’s efforts showcase a commitment to preserving nature for future generations and creating a harmonious coexistence between the resort and its natural surroundings.


Visitor Experience and Activities

A visit to San Alfonso del Mar offers an unforgettable experience filled with a wide range of activities for guests of all ages. Whether you’re seeking relaxation, adventure, or a combination of both, the resort has something for everyone.


One of the main highlights of a visit to San Alfonso del Mar is, of course, the world’s largest swimming pool. With its vast size and crystal-clear waters, it provides a unique and exhilarating swimming experience. Spend hours swimming, floating, or simply lounging by the poolside, enjoying the stunning surroundings.


For those who want to explore beyond the pool, the resort offers various water activities. Rent a kayak and paddle around the pool, taking in the panoramic views of the surrounding coastline. Or, if you’re feeling more adventurous, hop on a sailboat and feel the gentle breeze as you navigate the expansive waters.


San Alfonso del Mar is also a haven for sports enthusiasts. Play a game of tennis or basketball on the resort’s well-maintained courts, or challenge your friends to a soccer match on the spacious fields. Fitness enthusiasts can make use of the modern gym facilities or join in group fitness classes, keeping active while enjoying the beautiful surroundings.


If relaxation and pampering are what you seek, San Alfonso del Mar has you covered. Indulge in a rejuvenating spa treatment, where skilled therapists will revitalize your body and mind. Unwind and destress as you indulge in massages, facials, and other luxurious spa services.


San Alfonso del Mar also offers a host of other amenities and facilities to enhance your stay. Stroll along the pristine white-sand beaches, feeling the soft sand between your toes and listening to the soothing sound of the waves. Enjoy a cocktail at one of the beachside bars, or savor a delicious meal at one of the resort’s restaurants, where you can indulge in both local and international cuisine.


For those interested in exploring the surrounding area, the town of Algarrobo and its surroundings offer a wealth of attractions. Visit the Pablo Neruda Museum in nearby Isla Negra, a tribute to the famous Chilean poet, or embark on a wine tour in the neighboring Casablanca Valley known for its renowned vineyards.


From relaxation to adventure, San Alfonso del Mar provides a diverse range of activities to cater to every visitor’s preferences. It’s a place where unforgettable memories are made, and guests can immerse themselves in the beauty and tranquility of the Chilean coastal paradise.


Maintenance and Operations

Keeping the world’s largest swimming pool at San Alfonso del Mar in its pristine condition requires meticulous maintenance and efficient operations. The resort takes great care to ensure that the pool and its surrounding facilities are well-maintained to provide a seamless and enjoyable experience for visitors.


A dedicated team of maintenance staff is responsible for the day-to-day upkeep of the pool. They conduct regular inspections, checking for any signs of wear and tear, and promptly addressing any repairs or maintenance issues that may arise. This includes monitoring the pool’s filtration system, ensuring optimal water quality, and maintaining the cleanliness of the surrounding poolside areas.


The resort also invests in the latest technology and equipment to facilitate efficient operations. Advanced filtration systems are utilized to keep the water clean and safe for swimmers. This helps to maintain the pool’s sparkling appearance and ensures an inviting environment for guests.


In addition to regular maintenance, the pool undergoes seasonal maintenance to ensure its long-term durability. These maintenance procedures may include draining a portion of the pool to conduct deep cleaning or inspections. These processes are carefully planned to minimize disruption to guests and are carried out during periods of lower occupancy.


Efficient operations are also crucial to ensuring a smooth visitor experience. San Alfonso del Mar employs a well-trained and attentive staff to assist guests with any inquiries or requests. This includes providing information about the pool and its activities, offering assistance with equipment rentals, and ensuring the overall safety and enjoyment of all visitors.


Furthermore, the resort follows environmentally friendly practices in its operations. Efforts are made to reduce waste generation, minimize energy consumption, and promote recycling initiatives throughout the resort. These sustainable practices align with the resort’s commitment to preserving the natural beauty of the surrounding environment.


Keeping the world’s largest swimming pool running smoothly and maintaining its exceptional standards requires a combination of dedicated maintenance staff, efficient operations, and a commitment to sustainable practices. Through these efforts, San Alfonso del Mar continues to provide guests with a memorable and enjoyable experience in this extraordinary coastal destination.


World Records and Recognition

The world’s largest swimming pool at San Alfonso del Mar has achieved several noteworthy world records and garnered international recognition since its inception. Its massive size and stunning design have captivated the attention of visitors and pool enthusiasts from around the globe.


In 2006, the Guinness World Records officially recognized the pool at San Alfonso del Mar as the largest in the world, spanning an incredible 20 acres and holding a remarkable 250 million liters of seawater. This recognition solidified its place in history and attracted even more visitors eager to experience this remarkable feat of engineering.


The pool’s size and features have also earned it a place in the hearts of travelers and adventurers. It has been featured in numerous travel publications and television shows, showcasing its grandeur and breathtaking beauty. This global recognition has helped put San Alfonso del Mar and Chile on the map as a must-see destination.


Beyond its world records, the pool’s design and engineering have also received accolades and praise from industry experts. It has been recognized with prestigious architecture and design awards, highlighting the innovative approach taken in creating this extraordinary pool. The combination of aesthetics, functionality, and sustainability has been applauded by professionals in the field.


Not only has the pool at San Alfonso del Mar achieved world records and gained recognition, but it has also become an icon of Chilean ingenuity and a symbol of the country’s commitment to creating unique and extraordinary attractions.


Visitors who have experienced the pool firsthand often describe it as awe-inspiring and unforgettable. Its immense size and crystal-clear waters combine to create an unparalleled swimming experience that leaves a lasting impression on all who have the privilege of visiting. Year after year, San Alfonso del Mar continues to attract tourists from around the world, seeking to marvel at the world’s largest swimming pool and to enjoy everything this beautiful resort has to offer.



The world’s largest swimming pool at San Alfonso del Mar in Algarrobo, Chile, is a true marvel that captures the imagination and hearts of visitors from all corners of the globe. Its sheer size, stunning design, and impeccable engineering have made it a renowned and iconic attraction.


From its humble beginnings as a visionary idea, the pool has transformed into a world-record-holding masterpiece. It has become a symbol of Chilean innovation and a testament to what can be achieved when imagination and engineering prowess come together.


San Alfonso del Mar offers more than just a spectacular pool – it provides a complete coastal experience. The resort boasts luxurious accommodations, pristine beaches, and a host of amenities and activities to suit every visitor’s desires. Whether you’re seeking relaxation, adventure, or a combination of both, this coastal haven has something for everyone.


While the pool itself is undeniably the main highlight, the resort’s commitment to environmental considerations shines through. With sustainable practices in place and a dedication to preserving the natural beauty of the surroundings, San Alfonso del Mar demonstrates that luxury and environmental responsibility can go hand in hand.


Over the years, the pool has garnered international recognition and earned a place in the hearts of those who have experienced its wonders firsthand. It stands as a testament to human ingenuity and a symbol of Chilean excellence in engineering and design.


A visit to San Alfonso del Mar is a journey into a world of unparalleled beauty and luxury. Whether you swim, relax on the beach, or enjoy the various activities the resort offers, you’ll be left with memories that will last a lifetime. Experience the awe-inspiring world’s largest swimming pool and immerse yourself in the splendor of San Alfonso del Mar, where dreams come true and the limits of possibility are redefined.