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

These haunting ruins of a 700-year-old Prehispanic city have witnessed centuries of wars and massacres.

A quirky and charming restaurant founded by artists.

Visiting this cacophonous collection of vintage novelties is like stepping into the mind of a crazed toymaker.

A disquieting Aztec sculpture displays hundreds of stone skulls representing the victims of human sacrifice.

Meant to be one of the most extravagant hotels in the world, now an eerie, abandoned architectural gem in Mexico City.

Explore the atmospheric ruins of an abandoned convent in the dense forests of Mexico's first national park.

Superstitious? Discover the witchy side of Mexico through its largest esoteric market.

Part bookstore, part café, and part forest.

An island filled with hundreds of hanging, decomposing, decapitated dolls.

The final resting place of the world's first nuclear reactor.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Architectureal fantasy quarter of Rome.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

One of the highest points in Bexar county offers birdseye views of San Antonio and a four-story stone tower.

Soldiers honored the beloved Pat with a special grave.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

An ivy-covered arch bridge dedicated to Tejano music singer and legend Rosita Fernandez.

An abandoned, decaying sculpture garden built by an eccentric physician in the 1920s now looks more like a forgotten cemetery.

Colorful curls of hand-blown glass form a captivating tower in San Antonio's Central Library.