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 ...

The sleek steel of this 30-foot-tall double-helix staircase pops against the backdrop of an orange-and-glass vertical office tower. Located in the courtyard of the global accounting firm KPMG ...

This week, a New Jersey teen made headlines when he sneaked past security and climbed to the top of 1 World Trade Center, the tallest building in America. But 16-year-old Justin Casquejo isn’t ...