This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

Launched by Napoleon's soldiers more than 200 years ago, a cannonball remains embedded in the tower wall.

The world's largest frame offers spectacular views of the city's past and present.

The animals wander freely amid this gorgeous stretch of nature.

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

This no man's land slicing through the island is strewn with abandoned relics of another time.

The ruins of a fairytale castle with a tumultuous history stand high atop the mountains.

For nearly 2,000 years this church has been waging war on local snakes by importing cats.

This 700-year-old Cyprus castle is the birthplace of the world's oldest wine, said to be toasted by Richard the Lionheart at his wedding.

A little-known park with unusual, half-ruined structures and a mystical energy.

An abandoned Byzantine fortress and notorious prison.

Thousands of rusting train cars have been slowly falling apart on the edge of Greece's second largest city.

This field of half-buried stone crosses was the burial place of a sect of heretical gnostics.

A peculiar samurai statue overlooks the center of Brno.

This strange statue depicts a young boy's body with an adult Mozart's head and a single wing.

A cheeky architectural easter egg.

A former top secret nuclear fallout shelter now operates like a hotel stuck in the Cold War.

The United Arab Emirates's biggest and oldest fort pays homage to a lost era.

The oldest surviving mosque in the UAE has mysterious origins and unusual architecture.

One of the largest sand dunes in the world is nicknamed the "Scary Mountain" due to its steep slope and sharp incline.

Whitewashed mosque contains the world's largest carpet.

This enormous sports car themed amusement park is home to the world’s fastest roller coaster.

Planned as the world’s first zero-carbon city, it had lofty ideals—but is only 5 percent completed and aiming for 50 percent carbon-neutral.