Bucketlist Alert: Nemo 33 is the deepest pool in the world. "The pool is located in Brussels, Belgium. Its maximum depth is 34.5 metres (113 ft). It contains 2.5 million liters of non-chlorinated, highly filtered spring water maintained at 30 °C (86 °F) and holds several simulated underwater caves at the 10 metres (33 ft) depth level. There are numerous underwater windows that allow outside visitors to look into the pools at various depths." And it apparently costs roughly $28 for a dive? Sold.