Built around 1723, this is the oldest surviving home in the U.S.'s oldest colonial city.

If astronomy had a ghost, it would look like this observatory.

The famed architect designed this Minnesota gas station of the future with a lookout tower.

The oldest hotel in Nevada.

This Stonehenge-inspired solar calendar stands alongside a landfill, in the middle of the Nevada desert.

A futuristic-looking beach house built for the owner of a snack food brand.

This stretch of highway is said to be haunted by ghosts of settlers whose graves were paved over.

Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The largest ski jump in the Western Hemisphere hasn't hosted skiers in decades.

An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

A small poultry graveyard in the courtyard of a popular Key West watering hole.

Mysterious meeting place for UFO hunters near Area 51.

The watery grave of an impractical idea.

This once-booming Gold Rush town is now home to a herd of feral donkeys.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

A chimney and a plaque are all that remains of a logging camp that once cleared out a large swath of Minnesota's old-growth forest.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

A Wild West saloon that helped define a generation of psychedelic rock.

The wild west is still alive and well at this authentic mining town watering hole.

The home where a lovestruck Fitzgerald wrote his first published novel, "This Side of Paradise."

This Colorado fire station has been in continuous operation for more than a century.

An unexpected sinkhole in a desert flat within Gold Butte National Monument.

When waves crash onto this section of beach, the rocks sing a song.

This little slice of the Netherlands in the Pacific Northwest blooms in a rainbow of color each spring.