Breathtaking and huge 430 year old maps of Italy.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

The glowing blue Nymphaeum of Emperor Tiberius.

Go inside to really appreciate this 500-year-old technological masterpiece.

100 year tradition of fist fights, marked by marble footsteps.

The crypt of the imposing Stephensdom holds royal intestines and thousands of skeletons.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

The attic of a four-century-old canal house hides a clandestine church.

Christ's blood allegedly preserved in a Belgian town.

The final resting place of soldiers' loyal canine companions.

A six-ton wedding present for the King of the Scots.

A 18th century graveyard and its astonishing cortege of macabre iconography.

This stately monument has been wearing a traffic cone hat for decades much to the delight of the locals.

One of Ireland's most infamous prisons for rebels including men, women and children.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

A cluttered and astounding collection of antiquities and curiosities.

This one has sailed five times as far as Sir Francis Drake's famous ship.

A theatre built to house the rowdy Oxford graduation ceremonies became the stage for a debate about God's existence.

Collection of antique taxidermy and natural specimens, near one of Paris's oldest flea markets.

An iconic and eccentric bar for "Manouche" Jazz music keeps expanding its space—and its influence.

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

One of the oldest masonic museums in Paris.

The vast, legendary catacombs hold secrets much stranger than stacked bones.