One of the world's largest collections of pathological specimens.

A mysterious artist-run cabinet of curiosities and library.

This 1920s Dutch barge is now a floating bookstore.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

The oldest operating pharmacy in the world features 800-year-old recipes.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

More than 450 years ago, an Italian nun became the first woman to paint the iconic subject.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

Some say this medieval church is where the poet Dante married his wife and also met the love of his life.

The mummified relic of St. Antoninus.

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