The original "capsule building" is a masterpiece of Metabolist architecture.

An ordinary pond with fish from out of this world.

An oddly poignant roadside attraction celebrating American folklore.

This pebble beach is so beautiful that taking its rocks is against the law.

Less a museum than a bizarre fantasy world created by artists and engineers.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

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

The highest bridge in America was built for an almost unnervingly small amount of money.

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

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.

An architect's childhood fantasy treehouse made real.

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

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

A fitting attraction for the corn capital of the world.

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

The first declared National Monument in the United States.

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

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

See massive fossils that are over 200 million years old in northeastern Arizona.

This public square capitalized on a single Eagles reference to bring some life back to an Arizona town.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

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