Go inside to really appreciate this 500-year-old technological masterpiece.

This legendary city has been a tourist attraction for centuries.

An experimental, automotive replica of Stonehenge.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

A fitting attraction for the corn capital of the world.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

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

Half of a waterfall goes into the river while the other half seems to disappear.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

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

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

The world's longest known cave system.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

The beautiful baroque library of the Hapsburg empire.

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

The first declared National Monument in the United States.

The fairy tale castle of the “fairy-tale king,” this was also the inspiration for Disney’s “Sleeping Beauty.”

The celebrated eyesore created by starry-eyed sweethearts.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

The former sign of this immortal music venue is just that--undying.

The most confusing clock in New York.

This historic address is home to the beloved ball and is an almost totally empty building among the most expensive real estate in the world.