Around 100,000 bodies are buried below the medieval headstones, many of which mark graves with multiple bodies stacked up to 12 deep.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The hidden lair of an alchemist rediscovered in a 2002 flood.

Macabre astrological automaton clock dating to the late 1400s.

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

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

Breathtaking and huge 430 year old maps of Italy.

The mummified right fist of a 1,000-year-old saint-king sits inside an ornate golden reliquary.

A triumphant marble and bronze fountain depicting a 15th-century Hungarian king and his hunting party.

A celebration of all things tacky, garish, and bizarrely creative in the Romanian capital.

Baroque celebration of the end of the Great Plague of Vienna.

One of Amsterdam's narrowest houses is located right across the canal from its widest.

The celebrated eyesore created by starry-eyed sweethearts.

This bridge was constructed from the rubble of the infamous Bastille.

A beautiful drive through the foot of the Alps traces the path of 15th-century Turkish raids.

One of downtown Berlin's last reminders of its Communist past.

The site of the famous Nazi book burning campaign of 1933 remembers its "Night of Shame".

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

This futuristic building is yet another architectural wonder in Dubai.

A preposterously luxurious hotel with gold-plated iPads, Rolls Royce chauffeurs, and a staff that trains by watching "Downton Abbey."

This amateur-built East African church with mismatched towers is an architectural abnormality.

A cultural center on the shores of Lake Malawi dedicated to preserving Karonga’s past and present, including the fossilized remains of the Malawisaurus.

This remote mountain shrine is one of the most sacred Zoroastrian temples remaining in the world.

Perched above the bustling town of Kerak is a sprawling, ruinous castle that has witnessed nearly a millennia of Levantine history.