Swimming pool

The TARDIS has a swimming pool which is often mentioned. When he first meets Amy Pond (The Eleventh Hour) The Doctor tells Amy that his new TARDIS has a swimming pool. They rescue River Song while she is falling from the Empire State Building and as she falls into the TARDIS she splashes into the pool which broke her fall. We have never seen the pool, It is still a important feature in the TARDIS. The Doctor also wishes to retire on The Lost Moon of Poosh or in Paris. Poosh has Swimming Pools which says that The Doctor must enjoy them due to the fact the TARDIS is equipped with a pool and he wishes to retire on a planet know for its pools.