The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

A beautiful geyser under environmental threat.

A monument celebrating the idea of reaching inaccessible places.

A Circus legend leaves an unexpected endowment.

The collection of 80+ pieces created between the years 1100 and 1500 is intended to be seen, heard, smelled, touched, and tasted.

It's believed Elvis Presley was inspired to write his breakthrough track after staying here.

A haunted hill that supposedly defied gravity.

A vast array of tropical plants collected by a vacationing couple.

Electrical pylon in the shape of Disney's beloved mouse.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

Thirteen pastel palaces in downtown Charleston add a gorgeous splash of color to the city.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.

Ruins of the elaborate house where the enigmatic costume designer threw glamorous parties for New York's theatrical elite.

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

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

The watery grave of an impractical idea.

Home to part of the world’s largest private collection of original manuscripts and documents.

Terraced flowerbeds and rock sculptures in the midst of the Minnesota wilderness.

One man's quest to save his town with a trail of record-breaking sculptures.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

The only road through the heart of Glacier National Park.

European castle ruins in an American state park are actually the product of death and grief.

A scenic ravine with an astounding collection of rock art created by the Indigenous people of the Great Plains.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.