Question: What is located at both Elitch Gardens in Denver, Colorado and at Särkänniemi in Tampere, Finland, similar to the Intamin roller coaster themed after the TV series  located at Nickelodeon Universe in the Mall of America in Bloomington, Minnesota?
Sentence (from "Avatar Airbender"): Avatar is a halfpipe roller coaster that goes up to 70 ft to the top and back tower while spinning the riders.
Relevant evidence: No