France's national museum of scientific and industrial instruments.

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

This bustling Italian plaza is built on the ruins of an ancient Roman amphitheater.

142 ceramic steps become a mosaic once a year.

A slightly creepy gallery of plaster cast models in the same museum as Michelangelo's David.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

Secret refuge and museum of the Duke of Florence.

Pilgrimage site for star-crossed lovers.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

This blowhole is supposedly caused by a trapped monster.

This industrial area was the dumping ground for massive amounts of trash, some of which washes up as tiny bits of sea glass.

This hot dog-shaped diner has moved all around Colorado, never been to New York.

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

This super steep hike ascends 2,000 feet in less than a mile.

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

When ecosystems collide in the arid Southwest.

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

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

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

A downtown park built on top of unclaimed graves.

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