The oldest arboretum on the Dalmatian coast doubles as the gardens of Kings Landing in "Game of Thrones."

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

A tower marking the spot where Yugoslavia began its resistance against the invading Nazis stands neglected, but not quite forgotten.

A relic of the Cold War tucked away in the forested hills above Bratislava.

A shrine-like museum entirely dedicated to soccer superstar Cristiano Ronaldo.

A 1970s resort city now stands abandoned, caught in the middle of a divided island.

This tower is all that remains of the mosque that once stood in the center of the city, before it was destroyed by fire in 1941.

Monasteries on rock pillars, once accessible only by frayed ropes.

This Nazi ruin was the site where Hitler was almost blown up by a suitcase bomb.

Extremely famous in his native country, this Cracovian painter is all but unknown beyond Polish borders.

There are thousands of tributes and memorials to the King, but none quite like this one in a Kraków city park.

Poland's oldest salt mine has nearly everything one needs to live underground forever.

One of the largest amphitheaters in Europe is a former Nazi German gathering place that still stands today.

Gliwice Radio Tower, likely the tallest wooden structure in the world.

While the U.S. and Soviet Union were engaged in a space race, Poland built a UFO on the ground.

This uber-quaint Polish village is known for its habit of painting elaborate floral motifs on just about everything.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

This mushroom-shaped rock has frustrated and fascinated locals for centuries.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This grubby wall is said to be one of the Earth's esoteric energy centers.

It's always summer at the beach inside this former airship hangar.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

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.