An opal mining town in the middle of Australia where people live, worship, and shop underground.

Look closely and you’ll notice that the color changes a third of the way up the tower.

When it comes to handsignals (and colonialism) rock always beats scissors.

A former waterfront market is now in the center of town due to some interesting Boston engineering.

Macabre headstones carved with winged skulls, dancing skeletons, and pithy reminders of impending death.

An extravagant western hotel where every floor is the "ground floor."

This monumental Jesus is often referred to as "Our Milk Carton With Arms."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

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

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.

A sharp bend in a dramatic river canyon cut through red rocks.

A house turned museum is the real-life "home" of the fictional main character of The Wizard of Oz.

The oldest continuously occupied public building in the United States.

A natural formation that resembles a camel resting in the New Mexico desert.

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

A focal point of in Denver’s skyline for over a century, inspired by a Venetian basilica.

This was once the home of Gahan's Saloon, Denver's most storied speakeasy.

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).

A downtown park built on top of unclaimed graves.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

One of the greatest heroes of the Titanic tragedy came from humble beginnings to this beautiful home.

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

Once a mortuary that held the remains of Buffalo Bill, this Denver hotspot is now a death-fixated restaurant.