A memorial to the atrocities of the People's Socialist Republic of Albania.

An Albanian monument to the Communism that nearly crushed the country is now a crumbling wreck.

A museum dedicated to secret surveillance.

What happens when you cross a mayor and a painter?

On top of a resort town as old as the Bronze Age sits an incredible war memorial statue overlooking the beaches below.

These historic defenses ensured the city within would survive hundreds of years of occupations, sieges, and invasions.

This exclusive resort has completely covered a tiny Balkan island in a 5-star warren of guest rooms.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

This cemetery features modernist statues as strange as its name.

A beautiful but toxic fountain of mercury.

This 11th-century fortress is now the seat of Aragon’s state legislature.

The 2,000-year-old Roman columns are hidden within Barcelona's Gothic Quarter.

On the wall of this medieval walkway, a symbol of the Spanish Inquisition.

Barça football fans might see the insignia hidden in a church window as a divine sign.

A centuries-old bar once frequented by Picasso, Hemingway, and Dalí.

A curious collection dedicated to human and animal anatomy and pathology.

The largest airborne operation in history was launched to capture this bridge.

A late-medieval Dutch castle with trick fountains in its whimsical water gardens.

The portrait of a man from Japan who sent weekly letters to a Dutch hotel he never visited.

A Turkish ghost town abandoned in a population exchange with Greece.

A little church on a tiny island looks like something from a fairy tale.

Carved fountains poignantly placed in parks and in front of special monuments.

Fantastic views and thousands of love locks.

This unusual piece of Renaissance art depicting the bodily horror of crucifixion and skin disease may have been inspired by fungus-induced hallucinations.