A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

The picturesque birthplace of Icelandic democracy is drenched in the blood of its brutal past.

This monument on Breed's Hill proves that one of the most famous battles of the Revolutionary War is misnamed.

The world's most remote airport.

This was once the center of the Birdman cult, and is now a World Heritage Site.

This large round boulder is said to emit spiritual power, but it may just be magnets.

The largest stone moai on Rapa Nui.

Fresh wooden posts have been added to ancient holes to recreate a primitive henge clock.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

Sitting in the basement of a castle, the largest wine barrel in the world is bigger than most apartments.

More than half of this Indian palace is drowned but it looks all the more spectacular for it.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

This underground church is topped with a 500-foot cross that is seen by many as a beacon of fascist hubris.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

When you visit his grave, be sure to rub the Great Emancipator's nose for good luck.

A self-funded cemetery with a long list of inhabitants.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This tumultuous Icelandic lava field looks so alien European researchers want to use it as a stand-in for Mars.

Tubing through a cave lit with glowworms is a magical underground experience.

A perfect turquoise lake colored with glacier dust.

A glacier pocked with ice caves and surrounded by rainforests.