A small token of gratitude from freezing cold journalists who were given a warm haven while covering JFK's inauguration.

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.

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

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

A derelict bit of transportation infrastructure hidden in the woods.

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

A building shaped like the Army Corps of Engineers logo, because why not?

This forgotten boat elevator was an engineering marvel in its heyday.

The span is crooked and made from two older recycled bridges.

The oldest continuously-operating Chinese restaurant in the United States has been in business since 1911.

Headquarters of the legendary clairvoyant's readings, spiritual hospital, and massage school.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

Bizarre Cavern.

Tiny observatory made big contributions to the study of the Earth's motion.

Home of the only civilian casualty at the Battle of Gettysburg.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

It would be easy to walk past this unusual piece of art and have no idea it pays tribute to the odd life of a real chicken.

A ghost town that held steady longer than most, but finally gave up the ghost.

Within the former ghost town of Cisco is a carefully restored tiny town with one resident and its own art residency.

A small oasis not far from downtown Moab.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The fifth-longest natural arch in the world, and the longest outside China.