A portal into the bricked up canal that runs through the heart of Washington D.C.

This mysterious structure by the Washington Monument is a flood barrier designed to protect the White House against rising waters.

A derelict bit of infrastructure from the canal that once ran through D.C. is landlocked in the heart of the city.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

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

An obscure federal monument honors the French diplomat who served as Ambassador to the U.S. during WWI.

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

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

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

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

An overlooked tribute to one of the most important peace deals in American history.

The oldest house in Washington, D.C. wasn't originally constructed in the nation's capital.

This fertility idol of questionable authenticity inspired an iconic Indiana Jones artifact.

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

A clone of a cloned tree that was so important it allegedly had its own guards.

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

Go take a picture with the inventor of the daguerreotype photographic process.

An unassuming, powerful monument north of the U.S. Capitol bears witness to the resilience of Japanese Americans during a time of grave injustice.

This poor little statue is the most vandalized memorial in Washington.

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

The span is crooked and made from two older recycled bridges.

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

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.

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