The rusting remains are visible sticking out of the waters of the Delaware Bay.

A wrecked ship dating back to the American Revolution was only recently discovered off the Delaware coast.

Designed to commemorate the founding of the first settlement in Delaware.

A grotesque Fiji merman dwells within this traditional Dutch-style building.

A spectacular tribute to statesman and philanthropist Andrew Mellon.

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

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

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

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

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

Was there a small "backpack nuke" hidden in the attic? JFK apparently thought so.

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

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

"Congress may voluntarily remain in session throughout the summer, in order that our Congressmen may be protected from the intolerable discomforts and dangers of the ordinary outdoor weather!”

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

A muscular Art Deco monument represents the struggle between regulators and unbridled markets.

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

A tiny monument to the unsuccessful attempt by Thomas Jefferson to place the prime meridian in Washington.

A much-maligned monument to teetotalism.

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

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

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.

The most accurate timepiece in the world.