A historic and oft-filmed prison stands in a Chicago suburb.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

All unmarked mute swans on the Thames are owned by the Queen per a tradition that began in the 12th century.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A collection of objects supposedly singed by the hands of souls in purgatory.

This is the oldest Roman-made bridge in the city still existing in its original state.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

This ancient Roman prison is decorated with an upside-down cross not as blasphemy but as saintly tribute.

Architectural monsters are devouring this palace's every door and window.

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

The oldest preserved Triumphal Arch in Northern Italy

This beautiful 150-year-old synagogue survived Italy's fascist period and the Second World War.

An amazing collection of wax anatomical models and terratological models.

An extraordinary collection of 18th century anatomical waxworks.

Stuck in the arcade of Casa Isolani are three arrows of mysterious origins.

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

A massive line that stretches across the floor of Bologna’s largest church was created by a 17th-century scientist to measure the movements of the Sun.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

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