A rare example of a medieval house in Rome adorned with a melancholic inscription.

The ruins of an abbey believed to have been founded by Charlemagne in the 9th century.

This park on the outskirts of Rome boasts two ancient Roman aqueducts and a medieval tower.

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

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

The best preserved Paleochristian basilica in Rome hides a number of oddities and secrets.

The spot where the fascist dictator made some of his most famous speeches including declaring war on Britain and France.

The remnants of this unusual bridge await an uncertain fate.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

An ancient Egyptian temple in the middle of Madrid, Spain.

The ancient abodes are a testament to human ingenuity amid harsh climates.

A fountain standing as a testament to a doomed alliance.

A quirky little wax museum is home to some of the most famous Serbians in history.

Operating continuously since 1903, this "milestone" facility transformed the regional economy.

This fresco inside a Serbian cave church has been a source of disagreement.

This symbol of Yugoslav liberation decorated with 620 carved heads of mythical creatures is now a forlorn relic of another time.

Despite being pillaged and destroyed a number over times down the centuries, this historic church still sort of stands.

The laboratory where the Soviet secret police invented exotic poisons used to kill dissidents in hideous and (mostly) untraceable ways.

This 15th-century cave complex is one of the very few monasteries to stay open throughout World War II and the Soviet regime.

A 360 degree battlefield experience.

Gargantuan home of Russian science.

One of the world's tallest statues is also one of its most hated.

The California secessionist movement has its own foreign embassy, in Russia of all places.

Some Moscow residents once claimed the bizarre, contorted mass of metal on top of the building was used to manipulate minds.