This cluster of little wooden huts once ground local farmers’ wheat into flour during the days of the Austro-Hungarian Empire.

This ornate mosque is said to hold the remains of Muhammad's granddaughter beneath its dome of pure gold.

This ceremonial Mexican square looks as though it belongs in a science fiction movie.

Try not to get lost in this picturesque Brazilian labyrinth of the dead.

Standing proud atop a Turkish bluff, this Ottoman palace has retained its grandeur despite being abandoned for centuries.

This ancient ruined monastery has been destroyed by fire so many times that it seems like God hates it.

After this one-of-a-kind palace was built the architect's hands are said to have been cut off to keep it that way.

These jagged limestone blades cut out through the canopy of the jungles of Borneo.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

The field of tiny caves that mark this Chinese cliffside are each their own historic Buddhist temple.

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

These numerous Israeli caves were dug out over hundreds years for reasons ranging from hideouts to burial sites.

This centuries-old gothic monster has been converted into a sprawling, glossy bookstore.

This tiny lake temple dedicated to a water goddess seems to float on the surface.

This elegant Colombian fortress was one of the torture headquarters for the Spanish Inquisition.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

This replica medieval European village in the Dominican Republic was built by a Hollywood set designer.

It's not hard to see why the historic Peabody Conservatory of Music's library has been described as a "cathedral of books."

This Irish show cave is said to have been the site of a Viking massacre that claimed 1,000 lives.

A waterfall runs right through the middle of this Taiwanese shrine to the hundreds of workers killed while building a nearby highway.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

Frank Lloyd Wright's most iconic home dangles over a Pennsylvania waterfall.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.