This New Orleans tree is filled with hidden chimes that produce a carefully tuned melody.

A collection of oddities including Dr. Kevorkian's suicide device, the Thanatron.

The final resting place of New Orleans' most famous voodoo priestess.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

One man's fulfilled dream of living on an artificial island made of recycled plastic bottles.

This subterranean passage reveals the city's mining history as well as its legendary terrors.

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

The conquistador's former fortress is the oldest preserved colonial building in the Americas.

This beloved, centuries-old tree stands at the center of a small park dotted with archaeological artifacts.

The underground mall's skylights look like they could be part of a spaceship.

The first public library in the Americas has more than 45,000 books dating back to the 15th century.

A fairytale-like grove with a crystal-clear spring bubbling under the shade of a massive ancient tree.

The Rio Lerma (Chignahuapan) in El Salto, Mexico, is one of the most polluted rivers in the world. It’s covered in white foam, and falling in can kill.

Trek through the jungle on a boat and a swinging bridge and you'll be rewarded with these refreshing, if pungent, mineral pools.

The striking and little-touristed ruins of an ancient city destroyed and rebuilt by the Aztecs.

This "City of Books" holds a museum, library, and the complete personal book collections of five of Mexico's greatest thinkers.

This one-window stand has been home to a giant vat of slowly simmering meats and an array of unique tacos for almost 50 years.

A Volkswagen Beetle decorated with millions of beads connects Mexico's past and future.

This old-school café is famous for serving coffee, chilaquiles, and the Cuban Revolution.

The ruins of the bathhouse used by the ill-fated last Aztec emperor still lie in Chapultepec Park.

This foreboding building was the headquarters of the terrifying Spanish Inquisition in Mexico.

Huge hole looks down onto an underground beach populated with sea lions.

These biodiverse university gardens form a green oasis amid the urban chaos of Mexico City.

Kitschy horror displays now fill the house where some very real serial killing took place.