An urban laboratory.

A geological mystery on Camelback Mountain.

This museum glorifies the humble potato.

Home to the deepest rift anywhere on Earth.

A cannon designed to fire an atomic warhead.

A landscape of massive spherical boulders are the main attraction in this Kansas State Park.

Marking the spot where a conquistador gave up his search for the fabled Seven Cities of Gold.

Self-built house and sculpture park where the creator can still be seen in a glass coffin.

A statue high in a hill that represents how Buffalo Bill got his name.

Home of mutant livestock.

Massive still life just off the highway in Kansas.

One of the Eight Wonders of Kansas and the first official National Natural Monument these stark formations look like nature's Stonehenge.

A true roadside icon standing on the same plains that the herds once roamed.

A fitting attraction for the corn capital of the world.

One man's quest to save his town with a trail of record-breaking sculptures.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

This large round boulder is said to emit spiritual power, but it may just be magnets.

The largest stone moai on Rapa Nui.

Marta Becket's hand-painted theater in the desert.

The rocks in this arid basin leave trails of movement behind them.

Small Nevada town embraced its designation as the "Armpit of America" with an Old Spice-sponsored festival.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.