European castle ruins in an American state park are actually the product of death and grief.

A collection of beautiful crystals shaped like freshly plucked roses.

An Oklahoma museum that celebrates the history of the "Mother Road."

A 50-foot-tall replica of the infamous lamp from 'A Christmas Story' illuminates this small town.

A quirky mishmash of Route 66 memorabilia and other throwbacks from the past.

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

What was once a summer home next to a waterfall has now become littered with graffiti and children in swimsuits.

Once the smallest park in the national system.

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

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

The modest childhood home where the baseball legend and Yankees star learned to hit from both sides of the plate.

Dad jokes and wordplay abound in this comic fake cemetery.

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

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

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

Final resting place of Geronimo, Quanah Parker, and the first atomic gun ever fired.

Over 50 historic windmills whir away at this outdoor museum.

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

The surprising home of the iconic Santa Monica Pier Ferris Wheel.

Circus cemetery for all the “showmen under God’s big top.”

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

Celebrate the history of the rich and truly misunderstood relationship between man and pigeon.

The largest land animal skull ever discovered.

Only museum dedicated to women pilots, with personal artifacts from Amelia Earhart and other aviatrixes.