Fittingly, America's museum of architecture is itself a magnificently designed old building.

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

A line of blue paint marks the route of the inaugural parade.

An overlooked memorial honoring the local Washington residents who died in World War I.

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

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

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

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

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

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

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

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

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

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

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A historic estate packed with George Washington's heirlooms, and its own nuclear bunker.

A historic ruin just 20 feet away from a busy highway onramp.

Before Nixon, "watergate" meant canals.

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.

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

The most accurate timepiece in the world.

A historic arena where the Beatles played their first concert in the U.S.

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