From China to Colombia, steps carved by ancient civilizations to rickety stairs on the sides of mountains, these are the world's longest and scariest stairways. These are only be attempted by ...

While staircases are fundamentally a means to get from one point to another, they become cool—and worth seeking out—when the form is made at least as important as the function.

A teen slipped to the top of the new World Trade Center? Big deal—watch the daredevils who’ve ascended the Burj Khalifa, Shanghai Tower, and posted video of their exploits.