Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

A stealthy Apache hideaway that became the haunting site of a mass grave.

The story of Two Guns, Arizona could easily be described as a Shakespearian tragedy on Route 66.

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

The final resting place of the most famous outlaw in the Old West.

Hidden in the New Mexico desert southeast of Roswell, nine small deep lakes formed inside sinkholes.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

A blacklight journey through a celestial art exhibit.

This fast-food outlet is the only space and UFO-themed McDonalds in the world.

A museum dedicated to the alleged Roswell Incident.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

A floating museum that was sunk by a flood and left to rot in the tides.

The beginnings of one of America's most famous military officers.

Step inside one of America’s rare poteaux-en-terre French houses.

Odd castle-like structures for collecting water sticking out of the Mississippi River.

In the Compton Hill Reservoir Park sits a statue whose lack of clothing caused a scandal for the group that commissioned it.

The longest of the four remaining covered bridges in Missouri.

Stand at the point where the two mightiest rivers in the United States converge.

One of the world's earliest skyscrapers.

A plaque on the side of a parking garage marks the burial place of a great Ottawa chief.

This mausoleum is the final resting place of one of St. Louis's richest and most tragic families.

Speak to a companion on the other side of the room loud and clear through this architectural anomaly.

A 35-foot-tall fork stuck in the ground outside an office building in Missouri.

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