Real bones which are said to have belonged to a Polish dragon.

The final resting place of the world's first nuclear reactor.

This notorious Canadian mental institution was home to some of the first LSD experiments and origin of the word "psychedelic."

The clock that sets them all.

A monument to the egos of two railroad magnates that fell into decline along with their careers.

A century-old cabin off of Highway 30 touts an unusual construction material: dinosaur bones.

One of the smallest towns in the United States.

This UFO landing strip was created by a charitable Wyoming city that was worried about residents of Jupiter.

Population: 1.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

A haunted hot springs hotel that went from healing retreat to asylum before it was restored.

Home to the deepest rift anywhere on Earth.

This former rail stop in Utah was abandoned, repopulated by some nostalgic friends, and now is home to a single DIY aviator who lives in a hangar.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

New fungal and bacterial species call this deadly lake home.

See the computer’s history revealed over the course of 20,000 years.

An apocalyptic seismic event creates a deadly chain reaction that ends with a 6-mile long lake developing within weeks.

This amazingly preserved Gold Rush town is a historian's dream.

A sleepy little town that had the greatest landslide in North American history fall on it.

The only road through the heart of Glacier National Park.

Built after the 1991 discovery of one of the world's most complete T.rex skeletons in the nearby hills.

Native Americans built this circle of stones, which was used to predict astronomical events.

Mining town from the late 1890s, once home to Calamity Jane.

A monument to the center of the North American continent may be off by a few miles.