A historic neighborhood church is reborn as a psychedelic arts collective.

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

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

There’s a hidden military meme engraved on the World War II Memorial.

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

A monument in Washington D.C. marks the spot from which all other roads were supposed to stem.

A derelict bit of transportation infrastructure hidden in the woods.

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

This stately mansion, built in 1787 by America's first Secretary of the Navy, is rumored to be one of the most haunted buildings in Washington, DC.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

A rotating cast of guys and dolls in front of a Washington, D.C. building.

You could be standing at the site of one of D.C.'s most fatal tragedies and not even know it.

This grisly headstone doesn’t seem to be resting in peace.

An Industrial Revolution-era public work that purified water using nothing but sand.

Franciscan monks created a facsimile of the Holy Land for North Americans who couldn’t afford the trip overseas.

Enormous piles of historically significant stones, dumped by Congress in a forest, and abandoned for 60 years.