Monks in the empyreal Alazani River valley have preserved their 1,000-year-old winemaking tradition.

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

This architecturally eclectic fortress witnessed centuries of bloody turmoil, including the massacre of its ruling clan.

A cylinder monument with a spectacular vista commemorates a friendship that some say never existed.

You'll find just about anything in this funky Tbilisi flea market.

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

Home to the oldest operating roller coaster in the Southern Hemisphere.

Central America's deepest lake is actually a volcanic caldera, surrounded by three volcanoes.

The intricate stonework of Machu Picchu serves as a testament to Incan engineers.

Huge stone depressions which may have acted as an Incan agricultural experiment.

This Peruvian canyon is filled with geometric salt pools that have been being harvested since the Incan empire.

This stunning mass of ice spans 121 square miles and is still growing.

The inspiration for the Patagonia Clothing logo, Cerro Fitz Roy turns pink at sunrise.

Picturesque basketball courts sheltered by historical defensive walls and with an enviable sea view.

A unique configuration of blown glass can be found inside this hotel lobby.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

A sinkhole and now a swimming hole, too, full of dazzling turquoise water.

This beautifully restored fortification kept the city safe for centuries.

This bazaar is one of the oldest in the Arabian world.

This spectacular mosque houses the second-largest chandelier in the world.

A statue in the center of Dublin dedicated to one of their favorite sons of rock & roll.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.