The scuba diving training facility was named for the steam that rises from the cave's chimney.

Florida might be at its most surreal in this museum devoted to the famed Spanish artist.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Gutted airplanes slowly decay in a Florida field.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

The world's oldest soul food restaurant is also one of its best.

The district's only illusionarium supports free writing programs for local students with every purchase.

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

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.

A historic ruin just 20 feet away from a busy highway onramp.

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

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

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

The famous abolitionist’s preserved estate is one of Washington's finest monuments to its great Black citizens.

A Civil War fort in the middle of Washington, D.C. has been swallowed by a forest.

The national park was once a plantation estate.

A nostalgic bibliographic gem.

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

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.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

People escaping slavery may have hidden inside a corpse vault.

A derelict bit of transportation infrastructure hidden in the woods.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.