Swimming pool
From Tardis Wiki, the free Doctor Who reference
A swimming pool was a container filled with water used for swimming.
The Doctor's TARDIS had a swimming pool. (TV: The Invasion of Time, Journey to the Centre of the TARDIS)
Jack Harkness used the swimming pool at Pontyvale Golf Course to electrocute a Craktor. (COMIC: Ma and Par)
The top floor of Paradise Towers had a swimming pool, video surveillance of which was forbidden by express command of the Great Architect. (TV: Paradise Towers)
The leisure planet Abydos had non-gravity swimming pools. (TV: The Leisure Hive)