A museum of magic with a Sadist past.

An eclectic collection of thousands of items owned by the sculptor Frederic Marès.

This home designed for chocolate magnate Antoni Amatller is an exquisite treasure-box of Catalan Modernism.

A sulfuric martian landscape that looks far better than it smells.

A bizarre house filled with an astounding array of collections.

A museum within a former train depot tells the true story of a distinctly French-Louisiana musical genre.

Over 315,000 preserved amphibians and reptiles in jars.

An antique store houses the last operational diner from the defunct department store chain.

A medieval, mosaic-lined baptistry built by a heretical Christian sect.

Psychoanalyst Carl Jung reported a paranormal experience after visiting this mosaic-lined Roman baptistry.

An incredible mosaic-lined monument said to have held the remains of an ancient Roman empress.

This 6th-century church has the largest and best-preserved collection of Byzantine mosaics outside Constantinople.

Filled with goldfish swimming in a shallow pool of sea water, this ancient crypt is more wishing well than burial site.

This building features dozens of faces along its facade, although one is a bit chilling.

A beloved local artist has been honored with this statue of a man emerging from a toilet.

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

The remains of an ancient Roman city are hidden underneath Bologna's beautiful public library.

This zoological museum began as the first great curiosity cabinet.

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

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

An amazing collection of wax anatomical models and terratological models.

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

An extraordinary collection of 18th century anatomical waxworks.

The grotto where Saint Ignatius of Loyola lived as a hermit for nearly a year.