A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

This spa theme park lets its guests take a dip in pools of coffee, wine, or ramen broth.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

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

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

The ghost town that ended up on Ebay.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Hanging over one of Japan's "hidden valleys," these vine bridges must be remade every three years.

This strange seaside tower got its name from a wealthy eccentric who would hide coins among its stones.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

Sleep snuggled in a sphere suspended atop the forest canopy of Vancouver Island.

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

One man's ambition created this psychedelic log home.

The hallucinogenic center of the ancient world.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

A pedestrian island in the middle of world-famous Times Square emits a strange (and purposeful) humming noise.

Roman ruins top white travertine terraces formed by ancient hot springs.

A beautiful Victorian-era cemetery, complete with a miniature village.

Abandoned bridge hidden deep in the San Gabriel Mountains.

A dilapidated dock tells the story of Titanic's missed arrival.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."