A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

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

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

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

This bridge over D.C.'s Rock Creek Park is sometimes called the "Buffalo Bridge" because of its four buffalo sculptures, which were cast from a single piece of bronze.

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.

Look closely and you’ll notice that the color changes a third of the way up the tower.

The only Leonardo Da Vinci painting in the Western Hemisphere.

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

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

The oldest continuously operating fish market in the United States.

Home to items never before seen by the public.

A museum cafe showcases Native American dishes and indigenous ingredients from across the Western Hemisphere.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."

A nostalgic bibliographic gem.

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

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

This unacceptably tall building was the real reason for Washington, D.C.'s skyscraper ban.

These recently uncovered walls are all that's left of Washington, D.C's first defense contractor.

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

The narrowest house in America is seven feet of pure spite.

The hidden "ballroom" under a mansion lake was built by a criminal who ate a cyanide pill during his trial.