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

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

An architect's childhood fantasy treehouse made real.

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.

The first declared National Monument in the United States.

The granddaddy of all tourist traps, built on ice water, jackalopes, and a giant dinosaur.

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

A fitting attraction for the corn capital of the world.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A spring-fed pool so deep it's used for scuba diving as well as swimming.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

A sculpture made of 10 Cadillacs as a monument to the “Golden Age” of the American automobile.

One part antique store, one part curiosities hodge-podge.

This unique structure in suburban Austin is made up entirely of other people's castaways, and constantly changing.

The arch that celebrated the completion of the Lincoln and Victory highways.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The world's largest dead polar bear, immortalized by taxidermy and Hunter S. Thompson.

Bill Murray bowled three straight strikes here at Reno's "Taj Mahal of Tenpins."

“Live hard, ride fast, eat pizza” at this joint filled with Evel Knievel memorabilia.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

A land of debatable treasure.