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

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

This 23-foot-tall bear stands amid the hustle and bustle of Hamad International Airport.

This fountain pays homage to Qatar's history of pearling, the primary industry before oil.

Qatar's oldest market can trace its origins back more than a century.

Ever-changing museum dedicated to graffiti and contemporary street art.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A tree-like building perches on its trunk in the Steglitz neighborhood of Berlin.

A narrow passage next to a cafe leads to a courtyard exploding with murals, tags, and paste-ups.

A memorial dedicated to the 29,000 Istrian freedom fighters of World War II.

This seven-sided Romanesque chapel is regarded as the oldest building in Rovinj.

An excavation site that signified Hercules in Pula, and a glimpse into the city's Roman history.

Maze-like streets filled with vibrant murals draw visitors to this Istrian town.

A Roman mosaic depicting a classical myth was only rediscovered after bombing during World War II.

One of the best-preserved Roman amphitheaters is still used today, but for less brutal events.

These sprawling military housing quarters from the 1960s are now defunct and hidden in plain sight on Malta’s Mediterranean coast.

A hidden three-foot-wide house separates these two regal churches.

This restored Portuguese cafe may well be the most beautiful place in the world to grab a Big Mac.

Elaborate tile work in this railway station tells the story of Portugal.

The stunning interior of this Gothic church is covered in ornate gold details.

Ancient catacombs form the foundation for this Rococo orgy of a church.

This giant sculpture made of trash is a critique of society's wastefulness.

An honorary saint of the people, Maria Adelaide became an incorrupt corpse, the clothes intact, exhaling “a strong scent of roses.”

Picturesque intersection of witchcraft and ancient Christianity.