Controversially restored in the 1970s, this giant 15th-century mosque is shrouded in legend.

Where Stoddart and Connolly suffered in the infamous Bug Pit.

This "tower of death" has acted as an observatory, a religious hub, and an executioner's lair.

This spectacular bridge supported by two gigantic hands looks like something out of a fantasy universe.

Founded by French colonists in 1919, this mountain resort has been transformed into one-of-a-kind theme park.

This bridge is embedded with a giant steel dragon that breathes fire from its mouth.

Showcasing some of the best-preserved temples of the Champa Kingdom.

The bears of Bern have been a city highlight for over 500 years.

The Swiss artist's bulbous and overgrown shape-shifting sculpture controversially graces the center of Bern.

This bunny-eared Moses represents an attempted compromise between two biblical interpretations.

One of the few places in the world that let's you legally relieve yourself on a UNESCO world heritage site.

A nearly 500-year-old sculpture depicts a man eating a sack of babies, and no one is sure why.

Caves famous for the dragon-slaying saint who lived there.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

This windmill has been grinding pigments for traditional paints for more than 200 years.

The only remaining wind-powered paper mill in the world.

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

The enigmatic and seldom visited ruins of a Mayan city-state.

The development of this cliffside waterpark is representative of Mexico's history of co-op tourism developments.

A hidden treasure of an abandoned city lies deep in the jungles of Campeche, Mexico.

Many people don't realize there’s a lot going on in—and below—the world’s tallest triumphal arch.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.

No telescopes, no power, no gift shop: The Observatory of Chichen Itza, one of the world's oldest observatories, takes astronomy back to basics.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.