Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

The oldest and smallest cemetery in Paris is only open to the public twice a year.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

A collection of over 15,000 zines works to preserve DIY publishing culture.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

Why walk on this historical site when you can zoom down instead?

A backdoor to Machu Picchu that only the most foolhardy infiltrator would attempt to breach.

255 feet of suds, scrubbers, and blow dryers.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

The world's fifth tallest waterfall is a spectacular silver chute of water that cuts through the cloud forest in northern Peru.

Over 100 million years ago, beach-bound dinosaurs left permanent marks on San Antonio's landscape.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

The 16th-century church was kept in its ruined state as a reminder of the casualties of World War I.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

Things aren't quite what they seem at this mind-bending museum.

Hundreds of boat-shaped headstones fill this graveyard as part of a centuries-old custom with mysterious origins.

These colossal desert barcodes have been fine-tuning spy satellites for decades.

One of the largest sand dunes in the world is nicknamed the "Scary Mountain" due to its steep slope and sharp incline.

Once in disrepair, this popular Texas stop along iconic Route 66 has been restored to its past glory.

Dozens of lights dangle from the branches of what may be the brightest tree in Los Angeles.

A sobering museum dedicated to landmines and the personnel working to remove them from Afghanistan.

A pride of the state, this working museum crafts pottery mosaics in the style of Pennsylvania's earliest European settlers.