Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

The video game-themed street art first popped up in the French city.

A surrealist timepiece by the artist of melting clocks.

A Parisian exterminator's shop whose storefront displays stuffed rats hanging from traps.

One of the largest squares in Europe contains an entire artificial island.

One of the world's oldest working clocks is curiously missing the Zodiac sign of Libra.

One of the oldest still-working clocks in the world sits on an ancient tower.

A modest museum in the final home of Italian poet and father of modern Italian, Francesco Petrarca.

Featuring the last fully walkable parapet walkway in Europe.

Destroyed numerous times, this centuries-old bridge has always been rebuilt with its original design.

This medieval castle was reconstructed by Carlo Scarpa.

A whale rib was used to advertise the store by the arch that offered exotic goods from far away.

These elaborate gothic monuments honor Verona's medieval lords.

A gorgeous example of 13th-century Gothic architecture.

A military museum, art park, mausoleum, and architectural oddity all on one fascist's estate.

A brutalist gem towering over the heart of Milan.

This poignant art installation raises awareness of violence against women.

This grisly effigy displays an early Christian martyr who was skinned alive and beheaded.

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

Artistic tombs, monuments, and a beautiful "Hall of Fame" lurk inside this cemetery.

In the 1940s, Italian architect Mario Cavallè built a dozen of these round homes in northern Milan.

This 1st-century CE Roman bath sits under a carpark.

The largest fountain in Bratislava.