The ruins of a world-renowned medieval hospital.

A pair of stone circles positioned on the bank of the River Esk.

The Devil’s Porridge tells the story of HM Factory Gretna and the munitions girls who mixed deadly chemicals.

Ruined castle with subterranean vaulted Goblin Ha' or "Goblin Hall."

An Anglo-Saxon cross inscribed with possibly the oldest written work of English literature.

A man throwing a giant severed hand towers over Antwerp’s main square.

A stone monument acknowledging Scotland's right to have a separate Parliament from the one in Westminster.

This ancient Corinthian helmet is South Korea’s only national treasure of Western origin.

A futuristic rocket marks the spot where three borders meet.

The final resting place of the great navigator, or maybe his brother.

An eerie collection of the surviving structures from a past celebration of the future.

A 16th-century Andalusian palace.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

The world's largest wooden structure.

Local folklore claims that this wall was not built for defense, but to provide labor during a time of famine.

Considered an architectural abomination by some, this metal-clad building is known as 'little red riding hood' by locals.

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

A full figure 4th century incorruptible saint lies in a glass coffin in Croatia.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

Gargoyle head that brings good luck.

An ancient knight and a symbol of the city's freedom.

A peculiar museum that includes many drunken tales, a drunk driving simulator, and much more.

A World War II evacuation tunnel turned into a history display of Croatian state and people.

Where the lovelorn find a home for their sentimental keepsakes.