Over 50 exquisite hand-painted Renaissance maps decorate a Medici storage room.

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

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

A large grotto built in the 16th century amidst Florence's famous Boboli gardens.

The middle finger of modernity.

The enchanting archway is the only surviving portal into Dublin's lost medieval wall.

Dublin's "Dead Zoo" serves as a window to Victorian museum design.

More than 5,000 artifacts donated by the people of the city, plus a room entirely devoted to the band U2.

This permanent collection of preserved bodies taken from Irish bogs is one of the leading authorities on such morbid mummies.

The 19th-century pharmacy (now a used bookstore) was featured in James Joyce’s "Ulysses," and has changed very little to this day.

The mummified heart of a saint lives on in this church—after a brief hiatus when it was stolen.

An Irish church where an 800-year-old mummy is reaching out of his coffin as if to shake hands.

This former Baroque palace on the historic Calle Montcada is a rare architectural gem and was once the meeting place of an aristocratic scholarly society.

The macabre collection of Jacques Sirgent, an expert scholar on the undead and all of their trappings.

The studio of Catalonia's most famous theatrical designer remains exactly as he left it.

Fantastically decorated underground chambers built in the 1760s.

Shakespeare, David Bowie, Dr. Who, the Saxons, Druids and Romans are all claimed to have all made their mark on these massive man made tunnels.

A vast overgrown cemetery, once known as one of London's "Magnificent Seven."

A glorious pub known for a spiteful printing feud and its famous typeface lost—then found—at the bottom of the Thames.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

This medieval church tower has maintained its clockworks since the 16th century.

Where Aleister Crowley attempted to seize the Hermetic Order of the Golden Dawn in a mask and a kilt.

A special shop catering to the needs of things that go bump in the night, and also helps kids become writers.