Fortified homes of highland warriors that are still in use today.

A small but hugely whimsical theater where marionettes play out the "The Battle of Stalingrad."

The first skyscraper to include a Ferris wheel built into the facade.

Tower with a double-helix spiral, adorned with letters of the Georgian alphabet.

A literally moving statue of stacked metal giants just continually trying (and failing) to find love.

Underground monastery and fortress.

These Stalin-era industrial 'death traps' hang lifeless above the city

Small church on top of a huge rock column.

Rock-hewn monastery complex with hundreds of cave structures tucked away into the mountainside.

The charmingly disheveled clock tower of Tbilisi's puppet theater.

Ancient serpentine sacrifice holder that has stood the test of time.

This remarkably well-preserved Egyptian plinth is pretty well traveled for a giant piece of stone.

A fountain standing as a testament to a doomed alliance.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

A marvel of Byzantine engineering under the streets of Istanbul.

At just six feet two inches deep, it is said by Guiness and Ripley to be the world’s narrowest freestanding office building.

A wall of chewing gum moonlights as collective art.

Stroll through a wonderland of stupendous moss-covered trees.

Traditional 15th century Chinese garden in the middle of Vancouver.

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

A working steam clock, one of only a few in the world, located in Vancouver's Victorian Gastown.

The beautiful baroque library of the Hapsburg empire.

Vienna's giant wonder wheel had a starring role in one of the greatest noir movies of all time.

Where old school Polish Chicago and young hipster Chicago live side by side.