A swing to dangle you off the very edge.

A turquoise lake within a volcanic crater.

Home of the "true" equator.

An elaborate shrine dedicated to the four corners of the world unfortunately misses its mark.

A dangling church built over a Colombian gorge.

This Ecuadorian cemetery is home to a jaw-dropping topiary wonderland.

A park with one large cat sculpture and 15 smaller ones, all painted by different Colombian artists.

Cathedral carved out of salt, located a mile below the earth's surface.

Read between the lines of the subway map to find the hidden abandoned Civil War fort.

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

A tiny museum housed in a New York freight elevator specializes in the "overlooked, dismissed, or ignored."

An accidentally hidden library containing the ephemeral history of New York.

The abandoned site of the Beatles spiritual awakening and subsequent revolt.

Nailing a coin to this holy stump is just another way to ask the gods for relief from dental pain.

A complex of six forts embedded in the Rajasthan hills.

The world's second-largest sundial, made entirely out of stone.

The remains of what was, not so long ago, the world's largest city.

World's most expensive home.

This precariously balanced boulder is said to be a hunk of stolen butter dropped by the gods.

This experimental utopian "city of the future" in rural India may hold a dark secret.

To gaze upon the visage of Sri Lanka's biggest Buddha, one must first pass through the Tunnel of Hell.

Once thought to be the Garden of Eden it holds a holy footprint claimed to belong to Adam, Buddha and Shiva.

An ancient stone fortress considered by many to be the eighth wonder of the world.

An empty relic of the Moscow Olympics crumbles away in Estonia's capital.