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

A museum wholly devoted to juvenescence.

A toy store with a century-long history preserves the craftsmanship of playthings of the past.

Eighty million natural history specimens call this gargantuan museum home.

Catacombs turned marketplace.

The quaint little store that is said to have inspired a famous Dickens novel was only given its name after the book was released.

The curios of pharmacist and collector Henry Wellcome.

19th century museum with an eclectic mix of curiosities, from Egyptian artifacts to items on archery history to the skull of the world's oldest horse.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

This lurid German fountain plots the sad course of marriage from dating to death.

A church of bones, decorated with 40,000 human skeletons.

This automated sculpture of two men peeing will spell out text messages with their micturition.

Despite attempts by local police to discourage it, Beatles-inspired graffiti has been a means for artists to air grievances for decades.

The first museum in the world devoted to sexual gadgetry.

Macabre astrological automaton clock dating to the late 1400s.

An incredible menagerie of more than 3 million taxidermied animals at the oldest science museum in Europe.

The largest and most famous wax anatomical collection anywhere in the world.

Started as a kitchen garden, now the second largest botanical garden in the world.

This contentious squat has stood through fire, violence, and government intervention as a hotbed of leftist protest.

Hamburgers are intensely proud of their tunnel beneath the river.

Wax models of disease and deformity are on display at this German medical museum.

Model Trains and Much More in Hamburg.

An outdoor sculpture park of giant pink robots and post-apocalyptic Christmas scenes.

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.