In this breathtaking canyon, crocodiles bask on boulders and glide through the murky waters.

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

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

After becoming locally extinct, this esteemed avian now flies free in the forests around the ancient ruins.

The majestic, sacred tree is represented on this piece of public infrastructure.

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

In the middle of this historic colonial city resides a modernist government building known as the UFO.

One of the few places where you can visit a cenote and Maya ruins at the same time.

Iconic red and white plaques show the creative names invented to navigate the city streets.

Three sinkholes filled with warm, crystal-clear water reached by a horse-driven cart on an old train track through the jungle.

A magical sinkhole on the Yucatán Peninsula is adorned with mini waterfalls and hanging vines.

These azure waters were thought to lead to the Mayan Underworld.

Found down a long dirt road, a sacred Mexican cenote and 18th-century hacienda remain hidden.

If you can look past the nearby sewer pipes, this urban sinkhole grotto is a mini-paradise.

A small collection of iguana-infested ruins hides amid Cancún's bustling hotel zone.

This temple to the sturm and drang of Richard Wagner contains a dragon's cave and reptile zoo full of living "dragons."

A ruined castle stands atop a hill surrounded by dragon lore.

This medieval castle overlooking the Elzbach river looks just like it did hundreds of years ago.

This small corner bar is home to a rare 1930s dance organ that still plays tunes for one Euro.

This statue dedicated to the story of a Flemish boy and his dog was relatively obscure in Belgium, but a cult sensation in Japan.

This legendary giant, born from vegetables, terrorized townspeople and cheated local children in games.

This former guildhall with a bacon-like exterior is now home to a museum covering 600 years of Antwerp's musical history.

Invisible bridge parts the waters, invoking biblical images and preserving the ominous feel of an ancient moat.

Part modern art project, part traditional chapel, this see-through church is only substantial from the right angle.