Yellowstone National Park
Yellowstone National Park has one of the world's largest petrified forests, trees which were long ago buried by ash and soil and transformed from wood to mineral materials. This ash and other volcanic debris are believed to have come from the park area itself as the central part of Yellowstone is the massive caldera of a supervolcano. The park contains 290 waterfalls of at least , the highest being the Lower Falls of the Yellowstone River at .
Kentucky Kingdom
In 1992, the Kentucky Kingdom made a large expansion and opened the Hurricane Bay water park along with the 150-foot-tall Giant Wheel. The following year a new slide complex opened in Hurricane Bay featuring four different slides. In 1994, the park opened Mile High Falls, the then world's tallest shoot-the-chute water ride. The children's roller coaster Roller Skater was also added that year. In 1995, T3 (formerly T2: Terror to the Second Power) was added. The ride was the first of its kind on the continent and the second only in the world, with the other being Condor at Walibi Holland in the Netherlands. Also in 1995, Hellevator, a 177-foot-tall Intamin drop tower was added just in time for the park's annual Halloween event. In 1996, the upcharge attraction, Top Eliminator Dragsters opened.