The Biggest Swimming Pool in the World
Imagine diving into a biggest swimming pool in the world so vast it looks like an ocean. The biggest swimming pool in the world isn’t just a place to cool off—it’s a feat of engineering and luxury that continues to awe travelers and pool enthusiasts across the globe.

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Welcome to San Alfonso del Mar
Located in Algarrobo, a coastal resort city in Chile, San Alfonso del Mar is home to the world’s largest pool. This artificial paradise stretches over 1,013 meters (3,323 feet) in length and covers a whopping 20 acres. Holding approximately 66 million gallons of water, it’s hard to believe this lagoon-like pool is man-made.
What sets it apart? Besides its massive size, it’s just meters away from the Pacific Ocean, offering an unbeatable scenic contrast—natural waves on one side, crystal-clear calm waters on the other.
The Largest Swimming Pool in the World by the Numbers
Let’s break down the incredible scale of this aquatic wonder:
- Length: 1,013 meters (3,323 ft)
- Surface area: 20 acres (approximately 8 hectares)
- Depth: Up to 3.5 meters (11.5 ft)
- Volume: 66 million gallons (250,000 cubic meters)
- Construction Cost: Estimated at $1.5 to $2 billion USD
To put it in perspective, this pool is the size of more than 6,000 standard backyard pools combined. No wonder it holds the Guinness World Record as the largest swimming pool in the world!
A Technological Breakthrough
Maintaining such a massive body of water isn’t a simple task. This is where Crystal Lagoons, a water innovation company, comes in. Their patented technology ensures the pool stays clean and turquoise all year long with minimal chemicals and energy.
Unlike traditional pools, this one uses a filtration system that requires 100 times less chemicals and consumes only 2% of the energy a conventional pool would. This technological marvel isn’t just beautiful—it’s environmentally efficient.
Activities You Can Enjoy
Visitors can engage in a variety of water-based activities that go far beyond swimming. Think of it as a private sea:
- Kayaking and paddleboarding
- Sailing and windsurfing
- Scuba diving training zones
- Floating lounges and sundecks
With its vast size and calm waters, it’s the perfect place for both relaxation and adventure.
An Icon of Resort Luxury

The pool is the centerpiece of the San Alfonso del Mar resort, which offers luxury accommodations, fine dining, and tropical aesthetics. It’s not just a pool—it’s a lifestyle destination.
The surrounding resort boasts:
- Private beach access
- Tennis courts and fitness centers
- Restaurants with sea and lagoon views
- Family entertainment and kid zones
This location is a popular destination not only for tourists but also for real estate investors looking to own a piece of paradise.
A Visual Delight
A major draw is its aesthetic appeal. Seen from above, it looks like a slice of the Caribbean. The water is a shimmering turquoise, enhanced by the artificial lagoon design that simulates a natural beach experience.
Drones and travel photographers frequently showcase the pool in travel magazines and social media. It’s not just an engineering marvel—it’s a visually iconic location.
The Impact on Global Tourism
The biggest swimming pool in the world has put Algarrobo on the map. It’s now a hotspot for international tourists and a must-see destination for pool lovers. The success of San Alfonso del Mar has inspired similar projects in Egypt, Dubai, and Mexico, spearheaded by Crystal Lagoons.
The project has reshaped perceptions of resort pools globally, showing that innovation and luxury can coexist.
Environmental Responsibility

It may be huge, but it’s also sustainable. The seawater is pumped directly from the nearby ocean, filtered, and recycled through a low-energy, low-chemical system. This reduces the environmental footprint significantly compared to traditional large-scale water parks.
Crystal Lagoons’ model is now being used in urban and desert environments worldwide, offering water-based experiences where natural bodies of water are scarce.
Planning Your Visit
While the pool itself is for resort guests and residents, visitors can still book a stay at one of the apartments or vacation homes within San Alfonso del Mar. The best time to visit is during the Chilean summer (December to March), when temperatures soar and the pool becomes a hive of activity.
Be sure to:
- Book accommodations early (especially in peak season)
- Plan water activities in advance
- Capture the stunning views from above using drones or balconies
Final Thoughts About Biggest Swimming Pools
The biggest swimming pool in the world at San Alfonso del Mar is more than just a place to swim—it’s a testament to human ingenuity and a blueprint for sustainable aquatic design. From its record-breaking size to its eco-friendly technology, this world’s largest pool is a marvel worth experiencing at least once in a lifetime. Whether you’re looking to relax, play, or simply take in the view, there’s no place quite like it.
FAQs About Biggest Swimming Pool
Q1: Can anyone swim in the world’s largest swimming pool?
Only guests and residents of San Alfonso del Mar have access to the pool, but vacation rentals are available for tourists.
Q2: How deep is the biggest swimming pool in the world?
The maximum depth is approximately 3.5 meters (11.5 feet), making it suitable for various water activities.

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