An atomic bomb-proof strongbox protects the U.S. Constitution from terrorists and thieves.

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

Perhaps the most scandalous statue of America's first president.

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

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

The unique traffic pattern named for an influential urban planner is also known as the Pedestrian Scramble.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

The first purpose-built art gallery in the United States is once again open as a center of craft arts.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

A gorgeous mural outside a beloved D.C. restaurant pays homage to famous Black Americans.

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Also known as the Founding Church of Scientology.

A tribute to Ponce de Leon's supposed quest for eternal youth.

A luxurious 1880s hotel with its fair share of Tiffany stained glass, Edison electricity, and of course, ghosts.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

A building so large that it has its own weather.

A haunted hill that supposedly defied gravity.

Electrical pylon in the shape of Disney's beloved mouse.