Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

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

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

Home to the story of the outlaw turned funhouse mummy, Elmer McCurdy.

A funhouse dummy that turned out to be a real life mummy, Elmer McCurdy is an urban legend come true.

No matter what the plaque under this massive legume says, this is not the world's largest peanut.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

A working cattle ranch with remarkably well-preserved prehistoric petroglyphs and ancient ruins.

See massive fossils that are over 200 million years old in northeastern Arizona.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."