A small etching on the white marble parapet was written in runic script by a Viking mercenary.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

The ornate miniature mansions were built for Istanbul's feathered residents.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

Nestled in the heart of Milan is a real wunderkammer of morbid curiosities.

Invented in the mid-19th century, this machine could send copied images via telegraph lines.

This camera store in Milan holds one of Europe’s largest collections of luxury-antique cameras.

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

The enigmatic sculpture hides above an escalator in a Milan metro station.

A brutalist gem towering over the heart of Milan.

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.

Remnants of cone-shaped fascist bomb shelters in Milan.

This poignant art installation raises awareness of violence against women.

Just across from the "Last Supper" painting is the famous painter's vineyard, a gift received for creating the masterpiece.

An exclusive waiting room built for the royal family in the 1920s is hidden in Milan’s central station.

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

The mark of the Devil's horns on a marble column in Milan.

Vast network of air raid tunnels beneath Lombardy's capital.

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

The odd depiction of the Virgin Mary and baby Jesus is rooted in the Catholic Church's eradication of Catharism.

"The prettiest love letters in the world" ... or so said Lord Byron.

Before there were doorbells this bronze ear was installed for visitors to announce their arrival.

Small on the outside, big on the inside, this church is an astonishing act of visual deception.