What better way to honor a pioneering anatomist than by preserving his severed head like a specimen?

This 18th-century dissection theater's frescoes display a gorgeous tension between the terrestrial and esoteric.

Remnants of cone-shaped fascist bomb shelters in Milan.

Long-abandoned art nouveau baths beneath Milan's Piazza Oberdan.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

The Cathedral of St. Ambrose has been hiding a special parishioner within its walls.

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

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

An amazing collection of wax anatomical models and terratological models.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

This zoological museum began as the first great curiosity cabinet.

Museum dedicated to wax representations of disfiguring diseases.

Macabre museum devoted to historical Viennese murders.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

Some people believe that this makeshift space monitoring station received transmissions from clandestine cosmonauts.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

The final resting place to 300 Victorian-era pets hides inside the city park.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Wedged between two buildings at the Great Ormond Street Hospital is this secret music installation.

An unusual round church in London with a Templar past.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

Thousands of well-dressed mummies below a monastery.

The famous author's cottage hideaway.