Massive series of 45 caves and over 51,000 sculptures carved from cliffsides in China.

999 stairs lead visitors through a massive hole in a mountain known as the Gateway to Heaven.

A fifth-century temple improbably built into the side of a cliff.

This vertical pinnacle in China was the inspiration for the floating mountains in the movie “Avatar.”

Why walk on this historical site when you can zoom down instead?

Ming Dynasty necropolis raided during the Cultural Revolution.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Known as the "Cross At The Crossroads," this massive metal cross is just short enough to avoid the FAA.

These pretty kitties killed and ate as many as 135 railway workers.

A controversial magical figure is hidden within a diorama of the city.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

An obelisk commemorating Lincoln's role in connecting the coasts.

The summit Roosevelt conquered before he descended to become The Chief.

One of the most enjoyable bits of history at Coney Island and “the most romantic ride in the world.”

Creating this diorama spurred naturalist Carl Akeley to begin advocating to protect the apes.

Here be dragons.

Outstanding taxidermy dioramas showcase the grandeur of the continent's wildlife with spooky realism.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

The most confusing clock in New York.

In its day this historic fort held 100 cannons pointed in almost every direction to protect New York.

Lady Liberty's first beacon of enlightenment is now displayed in a museum near the statue.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

An oasis of calm amid the chaos of the boardwalk, the museum traces the heritage of this beloved beachside amusement park.