World’s longest swimming pool

If you've been to Chile, you might have seen the world's longest pool in San Alfonso de Mar. 62 miles long, covering an area of 19 acres for a maximum depth of 115 feet, this swimming pool contains 250'000'000 l of pumped and filtered Pacific Ocean water.

World’s deepest swimming pool

NEMO 33, named after the famous Captain of the Nautilus, is filled with 2500 m3 of spring water and sinks down 35 meters deep. This wonder of architecture, located in the vicinity of Brussels, was initially intended for pro divers but is now also used for scientific purposes.