This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

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

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

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

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

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

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

Unusual building appears to be haphazardly built from randomly piled bricks.

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

Take respite inside this jaw-dropping church while climbing the volcano where Georgia's Prometheus was once chained.

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

A massive collection of petroglyphs dating back some 40,000 years.

The building's fluid, wavelike walls are a true feat of architectural ingenuity.

A unique museum dedicated to culture and artistry of carpet weaving.

Resonant stone, that has been played since prehistoric times.

A gigantic collection of teeny, tiny books.

Home to nearly a third of the world's mud volcanoes, Azerbaijan is home to a messy, bubbling, and sometimes explosive landscape.

A shrine of fire worship built on top of a natural flame.

Mysterious hillside with a continuously burning natural fire.

The charming storybook building now houses a small police museum.

The world's biggest floating museum in Gothenburg, Sweden.

A Gothic-inspired fish market is Gothenburg's best place to find loaves and fishes.

The place to be if you love vintage Swedish cars.

One of the world's few mounted blue whales, its jaws are hinged open allowing visitors to descend into a lounge.