This geothermal hot spring hides beneath a slowly growing mineral dome.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

The oldest attraction in Disneyland is a prehistoric stump that Walt may have bought for his wife.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.

Thousands of mounted insects, and some live ones, hide within an otherwise ordinary shopping mall.

An experimental, automotive replica of Stonehenge.

The first declared National Monument in the United States.

The tiniest tiki room in San Diego.

The unluckiest U-boat in the entire German fleet is now on display in a Chicago museum.

This $3 million model train takes you through Chicago, Seattle, and the thousands of miles in between.

This dynamic entertainment venue brings a much-needed funkiness to the region with its bizarre art, eclectic films screenings, and peculiar performance pieces.

A surprising collection of bronze faces beneath a bridge in Loveland.

This spectacular track has run continuously since 1882.

A small horde of mythical creatures lurk almost imperceptibly within the museum's wildlife dioramas.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Four glass boxes hover over 1,000 feet in the air to give visitors an unparalleled view of Chicago.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

An immersive environment that is part haunted house, part choose-your-own-adventure, and part jungle gym.

This Wyoming town is fascinated by a particular mythical creature.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

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.