A high-rise is a tall building or structure. Normally, the function of the building is added, for example high-rise apartment building or high-rise offices. High-rise buildings became possible with the invention of the elevator (lift) and cheaper, more abundant building materials. Buildings between 75 feet and 491 feet (23 m to 150 m) high are, by some standerds, considered high-rises. Buildings taller than 492 feet (150 m) are classified as skyscrapers. The average height of a level is around… (More on Highrise)