A mysterious and terrifying public art goblin seemingly meant to inspire local legend.

The largest single-building tribal cultural center in the U.S. is an expansive museum in Oklahoma City.

Very likely the only museum in the world that celebrates the glory of the humble banjo.

Travel through the hidden underbelly of the city in colorful tunnels filled with art and history exhibits.

An old spiral fire escape dangles above a public courtyard in Midtown Oklahoma City.

The first "Hut" was actually a small brick building.

The largest mural in the world painted by a single artist.

After retiring, Gary Pendergrass turned his yard into a wonderland of outsider art.

This century-old painting of a portly 10-foot-tall man spent years hidden behind plaster.

The oldest house in Lindsborg, Kansas, includes some fascinating inscriptions.

This mid-19th-century dugout was once home to a Swedish family as they erected their homestead.

A unique blue and yellow phone booth in America's "Little Sweden."

Salina's eye-catching giant mural depicting children at play is painted atop a century-old mill elevator.

This vivid painted ceramic sculpture evokes the expansiveness of the prairie sky.

Standing at 21-feet tall, this space cowboy adds to the legacy of Route 66's muffler men.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

Named for the 39 tribes that live in Oklahoma, this restaurant's menu deliciously highlights local flavors.

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

These hooded graves are the only of their kind in the United States.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

A toxic ghost town sitting atop a massive coal fire.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

Underground tunnels remain beneath this abandoned mental asylum.

A few stone foundations and an old graveyard are all that is left of this once thriving settlement in the wilds of Connecticut.