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

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

Whisper secrets in a busy station only to be heard on the other side of this acoustic arch.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

A semi-scholarly approach to sex.

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

Rising from the sea like a stone monster.

Staves, storm-calling, and of course, necropants.

A walk through the historic city center, under the streets of Seattle.

Elevated freight railway turned wildly successful urban park.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

The rocks in this arid basin leave trails of movement behind them.

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

Medicinal spa created from the mineral-rich runoff of a geothermal power plant

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

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.

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

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

Explore some of the most unique vehicles in history along with a cast of unsettling mannequins.

The oldest operating cemetery in Denver is the eternal home of some of the Centennial State's most famous residents.

The final resting spot of the Colorado Transportation Department's beloved unofficial mascot.

Antique automobiles, phonographs, organs, and farm equipment.