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World’s Largest Outdoor Swimming Pool

San Alfonso Del Mar (Images courtesy Spluch)
By Andrew Liszewski

If you hate swimming in hotel pools when they get too crowded I don’t think you’ll have much to worry about here. The outdoor pool at the San Alfonso Del Mar resort in Chile is 8 hectares in size, 1 km long and is acknowledged by the Guinness Book of World Records as the largest in the world. It’s filled with about 250,000 cubic meters of salt water which, if you’re wondering, is roughly equivalent to about 6,000 standard backyard pools. It cost about $1.5 billion to build and maintenance alone is about $4 million a year.

Besides swimming (and lots of it) the pool also includes a temperature controlled indoor beach, sailing, kayaking, scuba diving and even a water shuttle service for quickly getting from one end of the resort to the other.

[ San Alfonso Del Mar ] VIA [ Spluch ]


  • swimming luver

    i love this swimming pool i could live in it!!!!

  • Johnnieboy213

    It’s phenomenal! I love the architecture it is an eye catching piece of construction. I read every single comment and it disappoints me to hear many ignorant or haters degrading Chile. As a matter Chile is located in South America and is in a better economic situation than their sorrounding neighbors. Also I strongly believe that this pool is still bringing cash-into the country. And so WHAT! if they built the largest pool on earth; stop hating a give the credit they diserve. For your information I’m Panamanian, the country located in the isthmus of Central America. By the way some ask who has the 2nd largest swimming and the answer is Panama. The process of finishing the 2nd biggest swimming pool will soon be open for the public.

  • Johnnieboy213

    Another thing I forgot to mention dont you guys think that it would be better to swim in salt water next to the beach? I think that idea was great! why waist water when you can take it from your next door neighbor for free.

  • TheShadow

    http://maps.google.fr/maps?f=q&hl=fr&geocode=&q=chili+crystal+lagoo&sll=-33.093843,-71.174927&sspn=1.610687,2.554321&ie=UTF8&ll=-33.350516,-71.653197&spn=0.012547,0.019956&t=h&z=16&om=0

    really awesome engineering piece … i would like to know how they can warm up this huge quantity of water … and how do they clean it !!
    I suppose they just took water from the sea through a big filter … but how long did it took to fill in ?!
    In a little swimming pool, the plague are the three leafs and over things that can polluate the water (sand, ect) how do they handle this :s

  • James B

    This is Great!

    No Coastal Commission. No US Army Corps. No US Fish & Wildlife Service.

    Barbara Boxer (D) – Eat your Heart Out Baby!

    P.S. Is it a DoughBoy?

  • Bayley

    Deal with it folks! Its their money to spend however they want and im sure they worked hard to earn that fat cash. Youre all saying “stupid Chileans” but its one rich person in Chile they can spend their hard earned cash however they want to.

  • Abby F

    I think i want to immigrate to Chile:) and live in one of those pyramid things…and swim in the Lagoon:) Yah ill live there year round:)

  • Do some research

    Before you start bitching about how stupid it is to build a pool by the sea, think about this: Average temperature of the ocean ‘right next door’: 17C (64F) temperature of the pool: 26C (78F). I can assure you that warmer is better. Also, Chile is notorious for violent rip tides: SWIMMERS DIE! So please, just stfu.

  • http://www.bellingham-subdued-excitement.com Beverly Dawkins

    Wow! I have to put Chile on my “places to go” list! I agree, it really is an awesome job of engineering. Would love to go there.

  • Lotus

    Je suis désolé de voir les commentaires virulents dont les auteurs connaissent presque rien sur le Chili ! encore moins en géographie… C’est juste des critiques gratuites, irresponsables.
    Heureusement les autres commentaires plus justes plus intelligents qui donne une explication corrective à des idées erronées.
    D’abord il faut admirer le travail colosal (en architecture et aussi en réalisation) et aussi l’idée qui permet donner un coup de pousse pour l’industrie de tourisme au Chili !
    En suite si tous les travaux surréalistes comme cette piscine sont des “stupides choses” alors on aurait pas aujourd’hui les pyramides d’Egype, Les murailles de Chine, les grattes ciels etc etc.

  • Samir Boutros- Egypt

    Although it is in the other end of the world with respect to our country, I will visit it But I am worried about its heiginity . And its effect on the inviroment . How much chemicals discharged with water going back to sea. How is it filtered and cleaned.
    If the answer is positive, I will go with my family.
    I wish we get an answer.

  • http://www.ecosmartepool.com Ecosmarte

    Thats a huge pool.

  • Anonymous

    They built a pool next to the ocean.
    Riiight.

  • Paul Lippert

    Je pourrai faire mes commentaires en francais ( je suis d’accord avec Joelle)
    ou en anglais, considerant que la plupart des opinions sont negatives.
    I believe it is a great resort, no need for me to expand on this. The facts given by Francisco clear up most of the BS preceding his comments.
    Most commments show quite an ignorance of culture and geography. I also concur with fact the local community benefits. Let’s face it – no free lunch – someone spends and many benefit. If all this gives you hartburn, take some Pepto Bismuth and go on with your miserable life.

  • Kari

    I have to agree with Paul here. It’s an economy boost for a “not so rich” country. If it brings tourists, it brings money. That’s a positive. It may seem stupid to build a pool right next to the ocean, but look at all the idiots in California that have ocean front property and a pool on it as well.

    And as for the stupid comment about “Chileans”….. different culture = different (and many times BETTER) ideas. Help them out, spend your vacation in this BEAUTIFUL area!!!

  • Sully

    We often ridicule what we do not understand.

  • michelle the OKLAHOMAN.

    that, mes amis, is a big pool. but i don’t understand why its a big deal that its on the ocean. if you go any other beach resort there will probably be a pool there. i stayed at a resort half way between playa del carmen and cancun and it had a pool. and you know what? most of the people spent their time there. why wouldnt you? it has the aesthetics of the beach with the comfort of stability. and all of you who whine about the selfishness of this masterpiece, get over it. go hug a tree.

  • Carlcosta

    This is to Harry Ballsack and Fingel and to many other ignorants that we have in this world. The point of making a pool like that it is becaus you don’t want to get killed by the huge waves crashing on the shore or sucked by the strong current.
    To Harry, I am pretty sure that the people in your country need more baths because I live in yur country and your people don’t take showers or use any kind of deodorant besides that I have never encountered so many diceases and STD like in your country, so before making a comment like that, you should look in the mirror first but wait, you’ll brake it with your reflection.
    How many unnecessary things have been done in your country, wasting money instead of putting it for a better use, think about it, or maybe not, you have a little brain, better not. A chilean spoke

  • Andres

    i agree with carlcosta, the people who doesn’t have any idea that how is chile, shouldn’t do a bad comment, u have to live there to know how is a country, i’m chilean but i’m living in australia now, and i don’t see any difference betwen those 2 countries, they are both good, so u can fuck u all up the guys who made a bad comment about chile and the people who live there, if u are fucking ignorants better stay with your mouth shut!!!!!!!!!, u all think that is bad because is in south america, but is way better than all the countries in there, chao

  • bob

    ok so um i like potatoes and pie and nice pool :)

  • http://blog.geckogo.com/ Pokin

    I’ve seen these pics a number of times now but this pool never ceases to amaze me. I imagine you can get quite the workout just navigating back and forth across its length!

  • Ernie

    What is the bottom of the pool made with it is very blue like a regular pool?

    Thanks
    Ernie

  • http://blog.geckogo.com Eric

    Wow – I never thought we’d build swimming pools you could sail in! You could practically host rowing tournaments here.

  • http://www.2getitnow.com tommy

    I would guess it has a tide…

  • http://www.2getitnow.com tommy

    I would guess it has a tide…

  • http://www.spectrumpoolcare.com Spectrum Pool Care

    Let's see… we've maintained a pool that was used for the film, The Perfect Storm, on the Warner Bros. set in Burbank, CA. But that was a million gallons which is a drop in this pool. I'd say whoever bid for this project has got major abilities. Very impressive.

  • http://www.spectrumpoolcare.com Spectrum Pool Care

    Let's see… we've maintained a pool that was used for the film, The Perfect Storm, on the Warner Bros. set in Burbank, CA. But that was a million gallons which is a drop in this pool. I'd say whoever bid for this project has got major abilities. Very impressive.

  • Big Time

    Because you are a f'n stupid American or not educated about the rest of the world , gringo maircon

  • http://www.cancuntravelog.com steve@Cancun Trips

    Wow, I thought this was Cancun, but it is in Chile. $1.5 billion to build… oh well, oh well… this is the most incredible man-made place I have ever seen. Sending the url to all friends. Great find.

  • EFT4MeDebi

    Who or what will pay the incredible maintenance fee, 4million a year? By the way for those questioning building a pool next to the ocean. Look around the internet, there are thousands of hotels, resorts that do the same. More often than not it is a salt water pool , like this one. Many people when on vacation at these types of hotels prefer the pools for many aesthetic reasons. Degree of cleanliness, as opposed to the ocean with seaweed, fish, broken glass from bottles that cuts your feet. etc. Then there is the fear of the unknown factor, many have ir-rational beliefs that something like a Jaws type creature will bite them. I live 500 yards from the ocean and probably 40% of my neighbors have a pool. Also many people like to control the warmth of their pool, temp control is expensive. I don't believe the main part of this pool is heated. (I could be wrong, it happens once every 7 years) It would be too expensive. I also think the reason there is few people in the pool itself is because up until now it really wasn't advertised. The designation by Guinness should amp up the tourist factor. One other question, how come so much hatred on this site, You guys at war? War is bad. Beer is good. Peace…. EFT4MeDebi

  • A1PoolService

    This pool is huge, can you imagine that maintenance bill?

  • kelvinlandolt

    I'm thinking of arranging a group of master swimmers from Canada to train at this pool for 1 week – swim vacation. Seeking local person for logistics. Kelvin – klandolt@npconsultants.com

  • kelvinlandolt

    I'm thinking of arranging a group of master swimmers from Canada to train at this pool for 1 week – swim vacation. Seeking local person for logistics. Kelvin – klandolt@npconsultants.com