The only museum dedicated to the history of the "Magic Lantern," a medieval slide projector.

A master plumber has turned his love of art and toilets into a folk museum that's not taking the piss.

A 500-year-old series of tunnels long believed to be folkloric was uncovered beneath the streets of Puebla.

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

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

The winter home of millions of migrating monarch butterflies.

This detailed miniature model covers all aspects of life in a small Mexican village.

Extraordinary sculpture garden created by an eccentric English poet.

Inside this mountain lies several kilometers of breathtaking caves.

A Mexican Romeo-and-Juliet-esque legend has given this super-narrow alleyway a reputation for romance.

Mexico's astounding mummy museum with "the world's smallest mummy."

A neo-Gothic temple in central Mexico featuring a labyrinthine network of crypts.

A uniquely robust and historic look at Mexico's omnipresent dance with Death.

An enormous, inside-out glass globe built in 1935.

An abandoned facility that has become a place of ritualistic satanic worship, or so rumor has it.

An abandoned stretch of elevated road in the middle of the Brazilian jungle.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

An abandoned stretch of highway, deteriorating next to the operational one.

Housed in a century-old building, this museum's dedicated not just to soft drinks, but to the free enterprise system.

Self-sufficient greenhouse floating on the Hudson River.

World-famous, Pink's still manages to keep its prized cult fetish status.

One woman's decades-long obsession with the "La Fée Verte."

This unlicensed collection of fast-food memorabilia sits on the site of the first ever McDonald's restaurant.

The bat-covered home of one of the world's most popular brands of rum is located on a tropical Art Deco campus.