This Art Deco fortress in upstate New York gives Manhattan's vaunted examples of the style a run for their money.

One of the largest Buddhist stupas in the world keeps an eye out in every direction.

Perhaps the world's only gas station inspired by a political scandal.

Tour the original street level of Port Angeles, buried underground in 1914.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

A beautiful 62-acre Catholic shrine and botanical garden.

New fungal and bacterial species call this deadly lake home.

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

Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A wall of chewing gum moonlights as collective art.

An 18th century wonder of the world, lost in WWII, re-created at the Catherine Palace.

This complex of vertically-excavated Buddhist, Jain, and Hindu monolithic temples in India's Maharashtra providence illustrates a spirit of tolerance characteristic of ancient India.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

These fantastically named natural pools look like something out of a Scottish myth.

A set of ancient drawings in the desert of Peru that are so massive, many of them can only be fully seen from the sky.

Isolated atop this Balinese sea crag is a lovely Hindu temple that is said to be guarded by sea snakes.

The most iconic structure in Scotland has been home to bishops, colonels, and Sean Connery characters.

Rustic natural hot springs in the deciduous rain forest.

This historic "City of the Dead" lies prominently in the center of New Orleans' famous Garden District.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world’s largest coastal brick fortresses.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.