Psychedelic murals coat the inside of a nondescript research library.

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

The ruins of an ancient temple to the Aztec wind god discovered in the middle of a metro station.

CDMX's home for the world's culinary delights.

This extraordinary art museum is like a secret world on the edge of Mexico City.

A barbarous band of serpents guard the bases of these Aztec temples.

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.

The hot chocolate here all stems from small, sustainable microproducers in Chiapas and Tabasco.

Diego Rivera hid various people and symbols in his first large-scale mural project.

The most complete statue of this Aztec god sits a top a throne carved with images of hallucinogenic plants.

The ruins of the "place of the cloud snake" sit in the middle of an urban environment.

Come face to face with the ferocious visage of the serpent-headed mother goddess of the Aztecs.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

Two planes stand abandoned after the closure of an aircraft-themed restaurant.

Sitting on an Italian hilltop is this surreal fortress built by the mad inventor of electrohomeopathy.

An intact, still operating pharmacy from the 18th-century filled with numerous artifacts and paintings.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Renaissance villa and gardens complete with a tormented colossus.

The underground sanctuary of a mysterious ancient cult.

The middle finger of modernity.

This community on a small Venetian island has taken to painting their houses in bright neon hues.

Rome's semi-secret peephole vista is also a former Crusader stronghold.