This rare polygonal meeting house is rumored to be built in a circle so that the devil has nowhere to hide.

A gardener's enduring labor of love is spread throughout a small Vermont town.

Once the supplier for noteworthy projects like the National Cathedral, this old brickworks now lies abandoned.

An obscure public service from the U.S. government that redeems burnt, moldy, and soiled old greenbacks.

The national park was once a plantation estate.

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

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

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

They sort through millions of dollars worth of diplomatic gifts on behalf of the government.

An easily overlooked memorial to a Ukrainian famine-genocide that killed over 4 million people.

Need a hardcopy of the 50-title Code of Federal Regulations? This is the place.

There's a crumbling old mansion inside the Smithsonian National Zoo.

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

Four bald cypress trees in Lafayette Square, across from the White House, mark the southern edge of a 100,000 year old cypress swamp.

The bank that helped fund the Mexican-American War and the purchase of Alaska met its downfall after helping Augusto Pinochet launder money.

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

A brass plaque dedicated to a convicted cannibal hangs in the National Press Club, and that's not even the craziest part of the story.

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

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

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

During the Industrial Revolution this “Temple of Invention” was full of intricate miniature machines and gadgets.

A bas relief commemorates the "Nuns of the Battlefield" who cared for soldiers on both sides of the conflict.

D.C. once had its own tiny rival to the New York Stock Exchange.

The winding route passes through an enclosed alleyway, two tunnels, and leads to the White House basement.