The world’s largest combined collection of U.S. and Russian aircraft got its start in a poultry building.

The largest land animal skull ever discovered.

A museum honoring Oklahoma military service, where you can look into Hitler's mirror and see a Mickey Mouse gas mask.

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

This historic theater's pipe organ still accompanies silent films just like it did in 1929.

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

The future of roadside attractions is this sci-fi soda mecca that is home to a 66-foot tall neon pop bottle.

This unusually circular centenarian barn became a Route 66 icon.

When you can afford only half a road, you build only half a road.

A larger-than-life monument to the overlooked women who braved Western expansion and broke down societal barriers.

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

A tiny but mighty little pumper sits in the middle of the street, waiting for the next big oil strike.

Nature's biggest mammal swims in landlocked Oklahoma.

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

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

A museum packed with instruments, lyrics, and other mementos of the American folk icon.

An acoustic anomaly with a mysterious cause.

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

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

One of the best examples of Art Deco architecture in the United States.

Songwriter Leon Russell transformed this church into a recording studio used by many legendary musicians.

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

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.