Ancient rock-hewn town that witnessed key events of Georgian history.

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

A museum glorifying the life of Stalin, located in the city of his birth.

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

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

A lively circle of dancers in the Georgian capital commemorates an ancient rite of spring.

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.

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

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

Sweden's southernmost prehistoric rock art is hidden just outside Gothenburg.

An abandoned lighthouse awaits its destiny: being buried under shifting sand.

Despite the groans of archaeologists, this astounding groups of Bronze Age petroglyphs have been painted red for tourists.

The world's oldest individual clonal tree looks like a wimp despite standing tall for 9,550 years.

Believed to be the country's tallest waterfall, the Njupeskär is actually much smaller.

Gravity seems to fail at this intriguing Swedish attraction.

This tiny Swedish troll protects the land and all who wander within it.

A botched 18th-century canal silenced one of Sweden's most magnificent waterfalls.

An ornate Thai pavilion in the middle of Sweden.

A centuries-old copper mine that once provided two thirds of the world's copper supply.

The machines behind the famous handblown glass from Sweden's "Kingdom of Crystal."

Archaeologists are still unraveling the secrets of the brutal massacre that wiped out this ancient fort.

These two springs are tied to several legends, one of which involves the travels of Saint Olof.

The world's only above water sand volcano, believed to once be the bathtub of a priest.