Singapore's landscaping project is home to 18 incredible Supertrees.

Dolphins, ancient clams and hundreds of waterfalls make this one of the world's top tourist destinations.

A quirky bookstore hidden beneath a sea of whitewashed Greek villas.

A tiny church on a man-made island in the Adriatic.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

Carefully reconstructed after the Bosnian War, this 16th-century bridge stands as a symbol of the country's enduring multicultural heritage.

This picturesque monastery at the base of a cliff is a peaceful oasis open to all visitors.

Inat Kuća, or "House of Spite," is more than just an oddly named restaurant.

This historic cemetery was inaccessible for several years due to dozens of land mines.

Oriental bazaar in the heart of Sarajevo.

This museum preserves the hand-dug tunnel that kept Sarajevo afloat during the Serbian siege.

A war-torn Olympic relic is being overtaken by graffiti and nature.

There's a mini version of Iguazu Falls hidden in the Balkans, and it's got a rope swing.

Bridge that died in war and was resurected.

The big toe of this towering monument to a Croatian national hero is worn from years of superstitious rubbing.

An opulent monument built for a duke who donated his entire fortune to the city of Geneva.

A small etching on the white marble parapet was written in runic script by a Viking mercenary.

With over 10,000 lights, this engineering marvel lights up the city after dark.

At this rare mosque in Tbilisi, Sunni and Shia Muslims pray side by side.

This extensive collection of vintage Soviet cars is the only one of its kind in the Caucasus.

This extraordinary, multi-pillared monument depicts the fascinating history of Georgia.

The secret room where early Bolsheviks cranked out propaganda fliers on a smuggled printing press.

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

A cluster of historic bathhouses built on the famed hot springs that gave the Georgian capital its name.