Climb right into the heart of this colorful Iceland volcano.

The most powerful waterfall in all of Europe.

This eye-popping Icelandic crater lake is surrounded by red volcanic rock.

An industrial site turned into Hungary's most cherished natural wonder.

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

Few other hotels can rival the grandeur of the Castle in the Rockies.

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

Wedding chapel's mysterious spiral staircase said to be miraculously constructed.

It houses the remains of a 17th-century version of the Titanic.

The most famous location in China was home to whole dynasties worth of imperial rulers.

Two thousand artifacts from around the world collected by one woman who loved to travel.

Furniture tries to escape an abandoned building in San Francisco.

The legendary building that needed ghostly approval before being built.

A terrific purveyor of natural history objects and curios.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

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

The most visited, and possibly most controversial, museum in Germany.

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

A beautiful geyser under environmental threat.

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

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

This quirky curiosity shop takes its cues from the world's bazaars.