The enigmatic skull gazes out over the ruins of a once-great Mayan city.

This strange sculpture of a menacing skull surrounded by sun rays was discovered at the foot of the Pyramid of the Sun.

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

This vibrant side road in Doha was painted light blue to reduce heat.

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.

The building is a gigantic piece of art inspired by the shape of a desert rose.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

The only quarter of the Old City not dedicated to a major world religion.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

Known as the "Valley of the Moon," this Jordanian wadi is one of the most amazing desertscapes on Earth.

This fortress dates back to the 6th century and is also the site of a controversial abandoned restoration project.

Space-age monument to an early 20th-century uprising.

The world's largest bicycle shelter can hold more than 12,500 two-wheelers.

Four giant movable street lights decorate this modern Rotterdam square.

A public urinal so pretty, it was declared a national monument.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This sweet-toothed bear searching for snacks has been a symbol of Madrid for decades.

An early 20th-century bullring converted into a modern shopping center.

A vista of the city and sea from atop the little-known viewing deck on an unassuming Columbus statue.

A lush indoor jungle fills this bustling Madrid transportation hub.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.