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

The Guardian of Tallinn.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

The largest source of fossilized insects anywhere.

An impressive collection of over 50,000 minerals including moon rock from the Apollo 17 mission.

A cathedral resurrected from the ashes of one of Europe's greatest urban fires.

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

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

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

When ecosystems collide in the arid Southwest.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

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

This tea house was a hand-built gift from Boulder's sister city in Tajikstan.

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

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

At this Denver landmark, the meals are compulsory, the sopapillas are complimentary, and the insanity is everywhere.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

Pigduck of Turku.

It houses the remains of a 17th-century version of the Titanic.

Macabre astrological automaton clock dating to the late 1400s.