An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An Italian hillside ghost town.

The eccentric mansion of one the most popular horror authors of modern times.

This symbolic piece of New Orleans architecture is also home to a few ghastly stories.

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

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

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

The site of the climactic scene from the classic horror film is now a historic landmark.

A toxic ghost town sitting atop a massive coal fire.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Try not to get slimed in Tribeca.

A bizarre house filled with an astounding array of collections.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

Rippling sand dunes frozen in the Arizona rock.

This "floating railway" is one of the world's oldest monorail systems.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

The birthplace of an eccentric alchemist and possible inspiration for the fictional reanimator of monsters.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A breathtaking viewing platform over the Alps.

The ruins of this gorgeous clifftop castle look like something from a fantasy novel.