An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Sip a Negroni Sbagliato in the bar that invented it.

A Milanese café entirely designed by the American director Wes Anderson.

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

Winding paths and ramshackle mausoleums in the oldest "park cemetery" in London.

This shop and gallery is a modern-day cabinet of curiosities, unassumingly positioned along an urban thoroughfare.

A kaleidoscopic warehouse-maze of handmade neon signs.

London's creepiest cemetery was once the site of dueling magicians and mobs of stake-carrying vampire hunters.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

Pop culture has helped to keep this iconic British building from being destroyed.

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

A scientific repository of goiters, boils and other ailments throughout Mexican history.

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.

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.

Twelve natural mummies are displayed in the crypt of this former monastery school.

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

Non-profit time travel mart sells goods you would need for a trip through the fourth dimension.

A church dedicated to the Mexican skeleton saint.

66,000 pieces of art, donated by one of the world's richest men.

A jaw-dropping "megalibrary" that turns book-browsing into a geometric adventure.

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

Part bookstore, part café, and part forest.