Claims to be the "World's Highest Hill."

A quirky collection of old chairs fills a random vacant lot in suburban Texas.

Collection maintained by the legendary designer.

Home to Hollywood history and a very special salt crystal.

The United States's largest hand-dug well is topped with a state-of-the-art museum.

The granite monument is engraved with the image of the talking horse's head coming through a barn door.

Over 50 historic windmills whir away at this outdoor museum.

This historic folk art garden contains a nightmare tower that claims to be the world's largest concrete totem pole.

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

Nature's biggest mammal swims in landlocked Oklahoma.

The storied steakhouse is the last in a long line of Lebanese-owned supper clubs in Tulsa.

Once in disrepair, the house where the 1983 film was shot has been restored and turned into a museum.

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

This ostentatious Italianate palace of an Oklahoma billionaire is filled with several themed mini-museums.

American bison herd descending directly from a Bronx Zoo breeding program that saved the species from extinction.

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

This highway overpass was named after the tragic disappearance of a young mother who got mixed up with the wrong people.

An acoustic anomaly with a mysterious cause.

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.