Skyscrapers have changed the urban landscape since they began to spring up during the 1800s. High-rise buildings became easy to access because of an important invention by Elisha Otis. He demonstrated the world's first safety elevator, fitted with a brake, in 1854. Today, high-tech, high-speed elevators zoom up and down the insides and outsides of tall buildings. Some elevators are made of glass, so passengers can have a ride with a view! For these buildings, elevators are