This site is where Lewis and Clark met and formed the Corp of Discovery with a few local men.

The childhood home of the Wright Brothers in Dayton.

Inside houses a vast collection of military aircraft and missiles spanning the ages.

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

A real flying saucer, contracted by the U.S. Air Force.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

He’s not from around here.

The world's longest known cave system.

The 10th-tallest pyramid in the world, this former sports arena is now home to a massive Bass Pro Shops store.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This replica of the Greek structure is in the heart of Nashville.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

The sign that drew attention to a young boy's cucumber stand is now the name of his fruit superstore.

Former villa and estate of James Deering developed to preserve native tropical forests.

Sleep where gangsters fell amidst smoke and flame, with nary a bullethole to show for the legendary struggle.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

A planet-hunting astrograph built in the 1920s to seek out the so-called "Planet X" beyond Uranus.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Although now a decaying ruin, this stone cabin's history includes several notable figures.

A spiritual vortex among the red rocks in Sedona.

The world's only teal arches exist in a city that cares more about its aesthetic than an Instagram influencer.

This sinkhole in the Arizona desert is filled with carbonated, arsenic-rich water

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

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