A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Toxic waste disaster that founded the Superfund program.

A natural gas leak provides a flickering flame beneath a waterfall.

This Frank Lloyd Wright summer house was designed along Lake Erie as a retreat for a client's wife.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

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

There’s a special club house at the top for the bell ringers.

The most accurate timepiece in the world.

A celebrity from the late Cretaceous period.

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.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

An overlooked memorial honoring the local Washington residents who died in World War I.

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

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

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

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

This imposing Masonic temple a mile from the White House was the first public library in Washington, D.C.

Obscure Freemasons still live in D.C.’s largest private residence.

Drink among marionettes at this pub inside a historic puppet theater.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

A century after his death, this covered bridge still calls to mind the plein air painter who loved it.

A short nature trail winds through the greatest works of poet Robert Frost.

A town wears its heart on the sleeve of a smiling girl, arms flung wide open in a cheerful greeting for all who encounter her.