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

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

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

This lovely pocket park is one of the most under appreciated in D.C.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The "lovely red Vega" of the legendary record-settling pilot.

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

A much-maligned monument to teetotalism.

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

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

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

Home to items never before seen by the public.

One of the most influential presidents in U.S. history wanted only this plain, elegant monument as his lasting memorial.

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

The oldest continuously operating fish market in the United States.

Giftshop catering to cryptozoologists and anyone with a sense of humor.

The most decorated dog of World War I is preserved in the Smithsonian.

Perhaps the most scandalous statue of America's first president.

The romance of early commercial flight still fills this Art Deco destination.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

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

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

The sculptor was instructed to add “stallion attributes” to the general's bronze mare.