More to explore:
great #photograph of a roller coaster
Google Image Result for upload.wikimedia....
10 highest roller coasters; teach kids engineering by building a marble roller coaster
Roller Coaster Science: It's Niftier Than You Think - a discussion of the design of the world's biggest wooden roller coaster in Gurnee, IL - Goliath.
Vanish roller coaster at Cosmo Land in Japan unexpectedly dives into an underwater tunnel.
Washington D.C. In a weekend! Want. to . go. again.