The location where the American Revolution ended.

Members of Congress have traveled between the buildings on Capitol Hill for a century hidden from tourists, press, and storm clouds.

Over the last century, this elegant columned facade has been home to the headquarters of a bank, several nightclubs, and a restaurant.

Light bulbs, scrap wood, and tinfoil comprise this homemade throne of the gods.

A former major munitions plant that has been converted into a sprawling art space.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

The romance of early commercial flight still fills this Art Deco destination.

The little-known, 300-year history of the area includes former lives as a bustling tobacco port, parking lot, and industrial dump.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

There aren't too many operational funiculars around, but Pittsburgh has two!

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

These unusual rooms on wheels are holdovers from the 1960s.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

This seemingly out-of-place gas station by the Watergate hotel was once described as the most expensive gas station in the world.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

Decades before the scandal, this staircase on the river was a literal "water gate."

The most decorated dog of World War I is preserved in the Smithsonian.

A surreal, interdimensional shopping center and portal to another universe by Meow Wolf.

A beautiful geyser under environmental threat.

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

The first declared National Monument in the United States.

A cemetery housing wild west legends in South Dakota.

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