An annual festival celebrating Colorado's most famous frozen corpse.

Central City celebrates its most famous madam by racing beds down Main Street.

Toss a Frisbee through the ruins of this Colorado gold mining town.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This old train trestle and collapsed tunnel once allowed the railroad to negotiate the steep slopes of the Colorado Rockies.

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.

Penn State's giant bug collection.

No one knows who painted this mysterious mural in a Penn State basement.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

A tiny one-room church built after one man's prayer for healing was answered.

All that remains of one of the Civil War's more deadly POW camps is a simple flagstone.

This abandoned iron furnace was one of the first to use coke—a type of high-carbon fuel—to make iron.

Pennsylvania’s creepiest roadside attraction is a haunting example of roadside kitsch.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Oldest existing wire suspension bridge in the United States.

The largest known open fault in the United States is basically a giant natural refrigerator.

The dairy farm in upstate New York where nearly half a million people gathered for three days of peace and music in 1969.

This picturesque cottage was the site of Ulysses S. Grant’s final and perhaps most important campaign.

This sprawling art park is filled with sculptures, nature trails, and art workshops.

This throwback amusement park is home to rides and unique storybook figures from the past.

A small chapel celebrating the spiritual bond between dogs and humans.

A serene plaza that commemorates one of the Granite State's most iconic figures.