Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

The hot chocolate here all stems from small, sustainable microproducers in Chiapas and Tabasco.

The oldest Naval chapel in the United States is home to an incredible collection of Tiffany stained-glass windows.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

The most alien-looking place on Earth.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Home to the Amorphophallus titanum "Corpse Flower," which is among the largest flowers in the world and also smells powerfully of rotting flesh when in bloom.

Chewing gum tycoon's memorial lies perched over wife's botanical gardens on Santa Catalina Island.

An ancient city hidden in the heart of the Sierra Nevada mountains.

Rent out a glass igloo to watch the Northern Lights like you live in the future.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

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

Micro-nation based around a nine-story high illegally built tower.

The fairy tale castle of the "fairy-tale king."

An enormous, inside-out glass globe built in 1935.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

Caves famous for the dragon-slaying saint who lived there.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

A strenuous, unofficial trail leads to spectacular views in one of America's most remote national monuments.

"Only the devil could play golf here."

Limestone grottoes turns everyday objects into stone.

A small town Romanian cemetery filled with darkly humorous gravestones.

France's most famous cemetery, with some of its most curious tombs.