A tall smoke stack and boarded-up buildings are all that's left of the pioneering plant.

A gorgeous garden oasis with winding paths, stone bridges, and a troubling history.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

This abandoned, windowless concrete block is one of the strangest buildings in Tulsa.

The collection is housed in an exquisite mansion that makes you feel like you've been transported to an Italian villa.

One of the largest Masonic temples in the world, created at the height of the oil boom in ostentatious style.

A tiny waterway named after a ghost story.

A park filled with vibrant mosaics created by more than 300 folk artists.

A taste of Middle Earth, in the middle of the Bayou City.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

No one is sure why this mysterious tradition started.

A 19th century family buried their dead among the pines, beneath gravestones styled after ancient Scottish cairns.

The final resting place and once home of the Bandit Queen of the West.

A mysteriously abandoned campsite in San Angelo State Park.

The 19th-century ruins hide deep in an overgrown forest.

An immersive art experience built by local arts collaborative, Factory Obscura, in the building formerly known as The Womb, a psychedelic arts center founded by the frontman of the Flaming Lips.

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

An unrealized Taoist palace left abandoned in a Houston suburb.

In the fictional world of Kcymaerxthaere, this was the former home of the Marshal of Gravity and the site of his tragic death.

The only international border marker within the United States.

This historic Civil War church has survived over a century of racial turmoil but still stands as a reminder of the town's roots.

A medieval castle in the middle of rural Texas.

One part antique store, one part curiosities hodge-podge.