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

The remains of the dam that unleashed a 15-foot wall of water on Denver.

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

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

A downtown park built on top of unclaimed graves.

Travel through the wholesome amusements of yesteryear at this charming miniature village.

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

These faux-cliff dwellings allow visitors to climb around on a replica archaeological site.

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

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

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

This too-low North Carolina railroad trestle is still a notorious big rig executioner.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

Beautiful Gothic-inspired lighthouse stands out among the run-of-the-mill striped fare on Bodies Island.

This research center for rare prosimians is studying how they sleep to help prolong human life.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

France's most famous cemetery, with some of its most curious tombs.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

This 16th-century Moroccan fortress-turned-armory museum offers prime views of the historic quarter in Fes.