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)
InterCom's Studio City resembled a giant theme park with towering skyscrapers and a ninety-foot-high representation of the company logo. (PROSE: The King of Terror)
Space World was a theme park run by the Parakon Corporation. (PROSE: The Paradise of Death, AUDIO: The Paradise of Death)
The Eighth Doctor once took Sam Jones to the theme park on Kursaal. (PROSE: Kursaal)
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)
Castle Extremis was turned into a historical theme park by the Galactic Alliance after the peace treaty between Anthium and Zerugma was signed. (PROSE: Martha in the Mirror)
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)