Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

An amazing collection of wax anatomical models and terratological models.

A diverse collection of wax, bone, papier-maché and mummified relics.

The mummified relic of St. Catherine sits forever on a golden throne.

This zoological museum began as the first great curiosity cabinet.

This splendid tomb may look fantastic, but there's nothing in it...

Archduke Ferdinand II's collection of rare objects is considered one of the oldest museums in the world.

Brussels' favorite peeing boy has a sister.

Nestled among the living residents is the final resting place of an apothecary plague victim.

This small museum in a 17th-century building honors three iconic Scottish writers.

Now home to a drinking establishment, this building has a macabre history.

A library where thousands of books explain how to avoid another Great Recession.

Sprawled across the Great Hall ceiling are various constellations and images relating to the zodiac.

A verdant 17th-century-style garden hidden along Edinburgh’s Royal Mile.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

This allegedly haunted 16th-century tower house-turned-museum exhibits thousands of spectacular objects.

Come for the oysters, stay for the priceless art honoring inventors across history and Scotland's favorite outdoor sports.

The taxidermy remains of the first mammal ever cloned from an adult cell are on display in Edinburgh.

One of the oldest scientific gardens in Britain, containing more than 13,302 plant species in its core collection.

This series of Scottish caves has no clear purpose other than baffling historians.

Tiny effigies of the victims of Edinburgh's famous Anatomy Murders.

Ruined 11th century abbey built by King David I in Edinburgh, Scotland.