Altoona, PA, United States
Leap-The-Dips Roller Coaster. Built here in 1902 by E. Joy Morris of Philadelphia, it was among some 250 side-friction figure eight roller coasters in North America. It became the last known ride of this type and the world's oldest known operating roller coaster. A National Historic Landmark.
Listen to the audio guide for Blue plaque № 28512 Free on WIP — starts by itself when you arrive, even with the screen off