A hidden three-foot-wide house separates these two regal churches.

Elaborate tile work in this railway station tells the story of Portugal.

Legend has it that the devil itself built this portal on a dare.

Hidden masterpieces in a small church in the medieval city of Bergamo.

If you ever wanted to touch a medieval mercenary’s three testicles, look no further.

An artificial lake that opened in 1930 as a seaplane airport, now a park for aquatic activities.

Third time's a charm, or in this case, two testicles are.

Remnants of cone-shaped fascist bomb shelters in Milan.

Saint Borromeo often prayed in this austere crypt during the 16th century.

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

A larger-than-life house of cards stands outside the house of a former fashion designer.

A brutalist gem towering over the heart of Milan.

Da Vinci's equestrian statue, 500 years in the making.

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

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

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

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

One of the oldest and most significant collections of Ancient Egyptian archeology outside of Egypt.

A long-buried ancient ruin unearthed right in the middle of the city.

An open-air art gallery that aims to share the stories of the people who live around it.

This magnificent Art Deco church is a reflection of Lithuania’s turbulent history.

Plaques celebrating Lithuanian writers freckle a wall of this picture-perfect path.

Legend has it that Napoleon Bonaparte fell in love with this Gothic church.

The world's first invisible city square is an homage to a man who pushed the boundaries of art.