A roller coaster was, according to Peri, a thrill ride. When Erimem was feeling particularly melancholy following wholly unpleasant events in the Himalayas during the time of the British Raj, (AUDIO: The Roof of the World)
Peri offered to take her friend to ride some roller coasters the next time the TARDIS arrived on Earth. (AUDIO: Three's a Crowd)
The Sixth Doctor and Peri went on a roller coaster ride in 1980s at Blackpool Pleasure Beach. The Doctor called the experience "magnificent." (PROSE: The Nightmare Fair; AUDIO: The Nightmare Fair)
The Eighth Doctor said that he never felt safe on roller coasters. (PROSE: The Book of the Still)
Crystal liked roller coaster rides. (AUDIO: The Ultimate Adventure)