Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Eighty million natural history specimens call this gargantuan museum home.

Monasteries on rock pillars, once accessible only by frayed ropes.

A Milanese café entirely designed by the American director Wes Anderson.

A space dedicated to contemporary art and culture, co-chaired by fashion icon Miuccia Prada.

One of the world’s smallest bars, just 13 square feet, is brimming with speakeasy flair.

This poignant art installation raises awareness of violence against women.

This giant middle finger statue sends an unambiguous message to Italy's bankers.

This massive blockhead sculpture hides an entire library.

A cast iron Fiat 500 sculpture overlooks the sea at Port Lympia.

Gods clash with machines in a power plant regenerated as a museum.

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This is the oldest Roman-made bridge in the city still existing in its original state.

Architectureal fantasy quarter of Rome.

This large, circular tomb is the final resting place of the first emperor of Rome.

Architectural monsters are devouring this palace's every door and window.

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

Hamburg's first legal sex work is relegated to a gated street that still does not allow pedestrian women.

Hamburgers are intensely proud of their tunnel beneath the river.

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

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.