This enthusiast-led facility is the only museum in the country dedicated to the preservation of weather artifacts.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

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

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

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

It was once the base for a series of domestic terror attacks.

Sitting in the arguable birthplace of the Wild West, this museum holds the largest collection of bronco busting bric-a-brac in the world.

The largest land animal skull ever discovered.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

The rogue roots are gradually consuming some of the historic marble grave markers.

The United States Capitol's former columns still stand.

One of the final grand railway depot hotel complexes is slowly being restored to its former glory.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.