A half-mile long and three stories high, this bridge over the Des Moines River Valley mimics a descent into a mine shaft.

Visitors to this arboretum are greeted by three smiling giants crafted from sustainable materials.

A decaying concrete oil tanker served as a disposal location for bootleg hootch.

This little dolphin is the first monument dedicated to the LGBTQ+ community in the southern United States.

Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Don't pass Gas, stop and enjoy it.

It's hip to be square in Iola, home of the largest town square in the United States.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

A Route 66 filling station that was designed to resemble the Hagia Sophia, and is now the symbol of an arts district.

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

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

This 1930s-era Route 66 Tulsa landmark was moved, restored, and filled with neon.

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

Three markers installed over the course of 140 years mark the point where Arkansas, Missouri, and Oklahoma converge.

The Bucyrus-Erie model 1850B electric shovel, or "Big Brutus," the largest existing electric shovel in the world.

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

This otherworldly church spire reaches up toward the heavens.

The Magic House provides a beautiful and creative environment for curious youngsters to get their knowledge on.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

Ever wanted to can Spam?

A giant pair of thick black glasses mark the tragic demise of a trio of rock and roll legends.

Beating out all other concrete competitors, this massive garden feature's pointy hat has earned it a world record.

Dedicated to the humanitarian efforts of the state's former governor.

This zombie-themed restaurant stands out in the heart of corn country.