Elaborate stone houses constructed from the ruins of war.

This Ottoman-era church is hidden amid a busy tourist area.

This enormous censer uses a pulley system installed over 400 years ago.

An accidental trick of light casts the perfect shadow of a pilgrim of the Camino de Santiago against the cathedral wall.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

The name of this suspended sculpture is Latin for "high horse," which is exactly what it is.

This sculpture of Edward of Woodstock is surrounded by eight Victorian lamp bearers.

One of three sites in England that house the National Collection of Arms and Armour.

This neon landmark has been posing this deadpan question to follicly-challenged Dubliners for over 50 years.

A particularly disconcerting tribute to Irish martyrs.

This popular square's history as the former site of a church is right beneath your feet.

Semaphore saints, a golden dragon's head, and a stone carved with religious warnings all call this cathedral home.

Public water fountains built during the Ottoman Era still stand throughout this seaside town.

These caves secretly held national treasures during World War II.

Legend says this sacred tree was a gift from goddess Athena.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

A Reformation-era fiery figurehead once denoted this location as a print shop.

Believed to be the longest railway bench in the world.

Created as a punny statement about genetic engineering this monstrous hybrid statue has become a beloved icon.

The red letters in the literary pavement leading to the library form a mysterious code.

Gutted during the Liverpool Blitz, this architectural husk has been left destroyed in honor of the dead.

Inside this former medieval prison is a collection of objects designed to inflict unbelievable pain and suffering on the human body and mind.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

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