One of the smallest towns in the United States.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

Native Americans built this circle of stones, which was used to predict astronomical events.

An architect's childhood fantasy treehouse made real.

The first declared National Monument in the United States.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

Statue dedicated to the star of an old television show.

A giant, Gilded Age mansion that once belonged to the beer baron of Milwaukee.

This striking art museum holds an amazing series of curiosity cabinets.

A place to eat for on-the-run agents and espionage enthusiasts.

Look closely and you’ll notice that the color changes a third of the way up the tower.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

Those with a sharp eye can find the hidden image of a German Shepherd on the memorial's Mural Wall.

The site of the climactic scene from the classic horror film is now a historic landmark.

A gorilla holding a VW Beetle isn't what you'd expect in rural Vermont.

Vermont's hills are alive with the sound of music at this historic hotel.

This 38-drawer structure claims the superlative title, but it isn't the world's only giant filing cabinet.

A humble plaque marks the site where the country music legend was found dead in his Cadillac.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

This abandoned amusement park was built on a site with a dark history.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.