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

This museum offers an actual time machine back through Colorado's past.

Take a dip in the world's largest mineral hot springs pool.

One woman's UFO-themed campground, complete with self-built energy vortexes, UFO-themed weddings, and magic bushes.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

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

This surprising gem is a world-class archeological museum hidden at the University of Chicago.

The site of the first couple's first kiss is commemorated by the most adorable presidential monument ever.

This historic-shipwreck-cum-diving-spot can still be seen poking its boiler out of the Lake Michigan waters that claimed it.

A memorial to the Potawatomi chief who allegedly ran nearly 150 miles to alert settlers of an impending attack.

The remains of a religious colony, its amusement park, zoo, and baseball empire.

The evolution of recreational vehicles and motorhomes is on display in the “RV capital of the world."

One of the few authentic Japanese gardens in the state of Indiana and perhaps the most peaceful place in the city of Mishawaka.

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

In legend, this ancient dolmen was said to have been created when a troll tried to destroy a church.

Mounds, rune stones, and a 1,000-year-old church, left behind by Denmark's first two kings.

When this Iron Age bog body was discovered in 1835, it was thought that she had died recently.

Walk behind a 50-meter-high waterfall.

A collection of over 2000 air-moving devices of all kinds displayed in the Fanimation headquarters.

An intricately carved Viking church overlooks a glistening fjord.

At the very tippity-top of Europe is a cliff from which you can view the midnight sun.