The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

America's Most Wanted's set resides in this tribute to the history of crime and punishment.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

Coins and medals straight from the mint await visitors to this shop in the nation's capital.

Once a sewer culvert, this road tunnel now offers cyclists and pedestrians a subterranean stroll under the C&O Canal.

An echo chamber with a waterfall wrapped around its base at the Embassy of Canada in Washington, D.C.

Mysterious installations bring levity and light to a sometimes stodgy city.

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

A tribute to the pop culture icon overlooks this Washington D.C. intersection.

This statue of one of baseball’s greatest pitchers looks like something out of a sci-fi horror movie.

‘Bush the old fire dog died of poison July 5th, 1869. RIP.’

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

Also known as the Founding Church of Scientology.

Behind an abandoned storefront is an example of pioneering 1930s gas station architecture.

Daredevil repair workers can worm their way out the access hatch, loop ropes over the apex and rappel down the monument.

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

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

Amid the sprawling Defense Intelligence Agency Headquarters is one of Washington's least accessible museums.

Before Nixon, "watergate" meant canals.

There’s a special club house at the top for the bell ringers.

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

The towering figures were created from the cemetery's fallen old-growth trees.

Where the U.S. government kept its actual treasure, before Fort Knox.

Washington's iconic carousel has a nice piece of Civil Rights history.