The White Star Line’s Adriatic (1907) was the first ocean liner to offer a built-in swimming pool.

The Amateur Swimming Association was formed in England in 1869 and still exists today.

That the “Kottam Pokuna” pools in Sri Lanka were some of the world’s first swimming pools.

The largest pool in the world, the San Alfonso del Mar Seawater Pool in Chile, offers 20 acres of water.

The largest indoor pool is used for astronaut training at NASA’s Neutral Buoyancy Lab in Houston, Texas.

The deepest indoor pool is the Nemo 33 in Brussels, Belgium, with a maximum depth of 113 feet.

The deepest outdoor pool is the San Alfonso del Mar Seawater Pool in Chile, with a depth of 115 feet.

The Fleishhacker Pool in San Francisco, closed in 1971, was so large it could be viewed from space.

The standard swimming pool size for international swimming competitions is a 50 meter pool.