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

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

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

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

Legend has it that President Grant’s frequent drinking in the lobby gave rise to the term “lobbyist.”

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

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

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

The most accurate timepiece in the world.

When it comes to handsignals (and colonialism) rock always beats scissors.

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 national park was once a plantation estate.

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

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

Parking garage where Bob Woodward met Watergate source "Deep Throat."

An ever-evolving wall of graffiti art off East Liberty Street.

The city is full of whimsical portals to another world.

Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.