Lie in a hammock where George Washington stood.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Once America's longest-manned military fort, now an abandoned hulk.

The haunting, dilapidated remains of a former poorhouse on Staten Island's Greenbelt.

The only Bahá'í house of worship in North America and one of only a handful worldwide.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

Ever wanted to can Spam?

The world's only museum devoted solely to the art and collection of action figures.

This collection of Japanese luck idols beckons visitors with over 2,000 waving paws.

The "Little Ones," show Portugal in full miniature splendor.

Elaborate tile work in this railway station tells the story of Portugal.

The corpse bride of Portugal.

Houses are tucked between, on, and underneath giant boulders.

A 16th century chapel decorated with bones, skulls, and entire bodies hanging from the wall.

One of the most beautiful bookstores in the world hides a neo-Gothic interior behind an art nouveau facade.

A majestic hotel for dreamers rises from the center of a fairytale wood.

A king's pet, a pope's gift, an artist's inspiration, and a tragic shipwreck.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

The body of at least one victim of a construction accident was left behind in the collapsed pylon, buried under tons of concrete.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

The final resting place of the most famous sharpshooter.

These 20-foot jaw bones honor a time when the leviathan bones were a sign that whalers survived the hunt.