The privately owned cemetery that holds room for Washington's finest when they step down from life.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

The United States Capitol's former columns still stand.

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

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

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

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

The most accurate timepiece in the world.

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

Before Metro, Washington had a robust streetcar network—and you see the remains of this infrastructure if you know where to look.

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

The oldest building in the District of Columbia was preserved because of a mistaken connection to George Washington.

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

The national park was once a plantation estate.

This church built atop a gas station promises to "equip you for the next stage in your life’s journey."

This unique historical monument features large concrete spheres designed to resemble fallen stars.

At 207 feet, one of the world's longest continuous escalators.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.

A former major munitions plant that has been converted into a sprawling art space.

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A lovely aquatic park built by a one-armed Civil War veteran who made a fortune from lotuses.

She stares out across six lanes of traffic, clutching a musket and infant with determination.