A theme park was location for entertainment, usually along the lines of a central theme. They were otherwise known as amusement parks.
The Festival of Ghana was a theme park in 1996. The First Doctor, Ian Chesterton, Barbara Wright and Vicki Pallister arrived in the Doctor's TARDIS in the Festival's haunted house pursued by the Daleks. (TV: The Chase)
EarthWorld was a series of theme parks in which androids replicated scenes from Earth history. When the amnesiac Eighth Doctor, newly reunited with his repaired TARDIS, tried to return Anji Kapoor home, he landed on EarthWorld instead. (PROSE: EarthWorld)
The Tenth Doctor and Rose Tyler visited a storybook-based theme park on Earth in which the attractions were all androids. An angry ex-employee damaged the park's control centre, causing the androids to go berserk, but the Doctor defeated him and shut off the power. (COMIC: Down the Rabbit Hole)
Hedgewick's World of Wonders was once the greatest theme park in the galaxy, but by the time the Eleventh Doctor, Clara Oswald, Angie Maitland and Artie Maitland went there, it was dilapidated. (TV: Nightmare in Silver)