Tallest Roller Coaster in North America: Kingda Ka

Kingda Ka at Six Flags Great Adventure (Jackson, New Jersey) is North America's tallest roller coaster at 456 feet (139 m). It launches riders to 128 mph (206 km/h) in 3.5 seconds, cresting a 90-degree top hat before a 270-degree spiral descent. Opened in 2005, it held the world height record until 2010 and remains the continent's tallest and second-fastest.