Intensely colorful calcite pools in Southern China.

Ancient paintings known as the "Sistine Chapel of Cave Art."

A cave's rare beauty held a cavernous secret hidden underground.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

Science fiction's grandfather has a fittingly marvelous tomb.

The 10,000 Torii shrine.

This geothermal hot spring hides beneath a slowly growing mineral dome.

Quite simply the largest tree in the world (by volume).

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

Japanese island famous for poison gas and fluffy bunnies.

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

The 953 windows undoubtedly make this the world's most beautiful screened porch.

This giant boulder is pinched over a 1000-meter abyss by two mountains.

Here, at the "world's longest art gallery," you'll find forty miles of ancient petroglyphs and pictographs.

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

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

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

The hallucinogenic center of the ancient world.

A take-out restaurant that only serves cuisine from countries with which the United States is in conflict.

Amazing and mysterious Neolithic settlement on Scotland's Orkney Islands.

Walk 2,300 feet above the ground on the "Troll's Tongue."