The San Andreas Fault spectacularly offsets this creek.

The first geometric self-supporting spiral stairs in Britain are a truly beautiful sight.

The world-record holder for the longest bridge stretching continuously over water.

The residents of the Neighborhood of Make-Believe live without much fanfare within the Pittsburgh Children's Museum.

This legendary "evil" doll has been haunting the citizens of Key West for over 100 years.

A renowned Civil War veteran, this Bald eagle now presides over the Wisconsin State Assembly.

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

The only diamond mine in the world where you can keep what you find.

The blinking light atop the iconic landmark has been sending secret messages for decades.

Collection of vintage trailers double as hotel rooms.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

In a 345-million-year-old cave that's 200 feet underground, dinner awaits.

A cavernous three-story, 43,800-square-foot basement that was forgotten about for 60 years.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

Eulogizing an unknown man's unusual demise.

This sidewalk tribute honors Colorado's great culinary creation.

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.

No one knows how this Pacific Northwest spruce tree came to have so many trunks.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

In a dry, neglected cemetery lies the unassuming grave of a soldier vilified in life but celebrated in death.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

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