Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

The internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

A field of nothing but boulders which resembles a giant's gravel driveway.

This maze-like slot canyon is a unique gem within an already fascinating geological area.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

The official atomic museum of the United States explores the explosive and productive history of a much maligned energy source.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

One Pittsburgh musician's decades-in-the-making memorabilia collection is on display at this rock-n-roll curio shop.

The world's longest known cave system.

A museum dedicated to the alleged Roswell Incident.

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

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The first declared National Monument in the United States.

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

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

Dramatic river bend surrounds a natural red-rocked pedestal.

Most-visited and most-photographed slot canyon in the American Southwest.

A collision of human error and natural geothermal pressure created this rainbow-colored geologic wonder.

Rippling sand dunes frozen in the Arizona rock.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

Exact replica of the ancient monument, but much, much lighter.

The museum calls itself the "National Museum of the Paranormal" and is full of eerie oddities.

An FDR-era tuberculosis sanatorium has stood abandoned in the suburbs of the U.S. capital for over 30 years.

Bizarre Cavern.