A volcanic core jutting above the plain between the Snake and Boise Rivers, a marker identifies the reference point for all U.S. Government Surveys in Idaho.

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

This erect, phallic geological spire wasn't always named so domestically.

One of the largest private collections of fossils in the world.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

The oldest extant wooden jail in South Dakota and possibly the United States. 

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

One of the smallest towns in the United States.

The highest bridge in America was built for an almost unnervingly small amount of money.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

Inside this shop, visitors are treated to a unique blend of natural history and art.

In addition to over 80 vehicles on display covering over 100 years of motorcycle history, this free museum focuses on the people who ride and love these bikes.

The moving metal works of one troubled artist can still be viewed on his front lawn... for now.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

Experience life in one of America’s smallest neighborhoods.

These markers are used to document elevation changes around the famed dam.

In the remote high desert of New Mexico, a strange array of poles beckon fury from above.

This popular pitstop lives up to its name.

This rusted car found in Petrified Forest National Park's Route 66 exhibit may be the most photographed abandoned car in the country.

Legends surround this jagged rock formation in the New Mexico desert.

Ute tour guides have been sharing the ancient dwellings and rock art inside this large park with visitors for more than 40 years.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Take a dip in the world's largest mineral hot springs pool.

Overlooking the Colorado Convention Center is this giant sculpture made from thousands of triangles.