Northern Ireland's Brobdingnagian stepping stones.

Ruins of a German Castle on top of a towering stone pillar.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

Countless grotesque faces stare out from this eerie Prague art wall.

A self-built castle made by a mysterious man.

Every autumn, this hillside is ablaze with red summer cypress.

The real life Hobbiton, this sheep farm has been forever transformed since being built for The Hobbit film series.

Where manatees are the snowbird vacationers in these balmy Florida springs.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

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

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.

A stunning, two-tiered waterfall made famous by poets, artists and the legend of a ghost dog.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

Rising from the sea like a stone monster.

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

Take a drunken tour inside the world's largest known geode.

This frequently-photographed waterfall takes only a short hike to visit.

A subterranean ice warehouse that has lain hidden beneath central London for over a century is now open to the public.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

An underwater city for the dead.