This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

A 400-year-old church covered floor to ceiling in ex-voto offerings from the faithful.

The fairy tale castle of the "fairy-tale king."

In the world's oldest university is a stunning 17th century anatomical theater carved from spruce.

The mummified relic of St. Catherine sits forever on a golden throne.

An amazing collection of wax anatomical models and terratological models.

An extraordinary collection of 18th century anatomical waxworks.

A striking memorial recalls thousands of Bolognese men and women killed fighting fascists in World War II.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

The wreckage of a tragic plane crash is on display at this museum devoted to a famous Italian conspiracy.

A diverse collection of wax, bone, papier-maché and mummified relics.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

This fairy-tale castle would make Dracula (who is said to have been imprisoned there) jealous.

This chimerical bridge/tunnel appears to dead end right into the sea.

This poignant sculpture of a gnarled weapon is a symbol of non-violence.

Climb to the top of its spiral spire for spectacular views of Copenhagen.

A little-known cafe in an old copper bridge tower with 360-degree views of the harbor.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Mountain where Jesus was first tempted by the Devil.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.