Arboretum

An arboretum was a type of botanical garden.

The Doctor's TARDIS contained an arboretum. (PROSE: Synthespians™, Relative Dementias, GodEngine, AUDIO: The Light at the End) The Seventh Doctor's alternate TARDIS also had one. (PROSE: Sanctuary)

Fair Destine had an arboretum where Roderick Upcott and his pet monkey were buried. (PROSE: Foreign Devils)

S-Lioness had an arboretum. (PROSE: The Also People)

The Titanian Queen had an arboretum. (PROSE: Ship of Fools)

The Eleventh Doctor and Clara encountered the Paranox Web in a far future arboretum. (COMIC: The Killer Weed)