The largest land animal skull ever discovered.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

Massive still life just off the highway in Kansas.

Home of mutant livestock.

A sculpture made of 10 Cadillacs as a monument to the "Golden Age" of the American automobile.

The Grand Canyon of Texas.

A half-size replica of the World Trade Center towers above Tulsa.

Sid Vicious famously punched a hole in the wall of this iconic music venue.

Collection of skeletal systems from the "world's leading supplier of osteological specimens."

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

The largest self-built castle in the U.S., six decades in the making.

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.

The fifth tallest statue in the United States is a shirtless monument to the oil worker.

Sitting in the arguable birthplace of the Wild West, this museum holds the largest collection of bronco busting bric-a-brac in the world.

An oil baron's wild paradise and the winner of an ill-fated air race.

These massive mitts are made of 30 tons of devotional bronze.

An acoustic anomaly with a mysterious cause.

Nature's biggest mammal swims in landlocked Oklahoma.

The highest point in Oklahoma used to be a lawless outlaw's paradise.

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.