This poignant art installation raises awareness of violence against women.

Remnants of cone-shaped fascist bomb shelters in Milan.

This curious building hides eclectic details like medieval gargoyles alongside naked angels and Art Nouveau mosaics.

The secret medieval communication system will whisk your words above the noise of the crowd.

The only university zoological museum in London houses extinct animals, bizarre natural history specimens, and a Micrarium of microscopic creatures.

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

A church of bones, decorated with 40,000 human skeletons.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.

Pilgrimage site for star-crossed lovers.

The middle finger of modernity.

This bronze boar's snout has been rubbed to a golden sheen by visitors seeking good fortune.

The largest and most famous wax anatomical collection anywhere in the world.

Giant, friendly pelicans in Central London, the most unlikely of places.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

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