<Li> Launched roller coaster </Li> <Li> Powered roller coaster </Li> <P> Several height classifications have been used by parks and manufacturers in marketing their roller coasters, as well as enthusiasts within the industry . One classification, the kiddie coaster, is a roller coaster specifically designed for younger riders . Following World War II, parks began pushing for more of them to be built in contrast to the height and age restrictions of standard designs at the time . Companies like Philadelphia Toboggan Company (PTC) developed scaled - down versions of their larger models to accommodate the demand . These typically featured lift hills smaller than 25 feet (7.6 m), and still do today . The rise of kiddie coasters soon led to the development of "junior" models that had lift hills up to 45 feet (14 m). A notable example of a junior coaster is the Sea Dragon--the oldest operating roller coaster from PTC's legendary designer John Allen--which opened at Wyandot Lake in 1956 near Powell, Ohio . </P> <P> A hypercoaster, occasionally stylized as hyper coaster, is a type of roller coaster with a height or drop of at least 200 feet (61 m). Moonsault Scramble, which debuted at Fuji - Q Highland in 1984, was the first to break this barrier, though the term hypercoaster was first coined by Cedar Point and Arrow Dynamics with the opening of Magnum XL - 200 in 1989 . Hypercoasters have become one of the most predominant types of roller coasters in the world, now led by manufacturers Bolliger & Mabillard and Intamin . </P>

Where is the oldest roller coaster in america located