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

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

An ossuary built in 1210 to collect bones from the Ospedale Maggiore of Milan.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

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

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

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

The middle finger of modernity.

Next to the Leaning Tower of Pisa is a cemetery home to ancient sarcophagi and disturbing murals.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

The "Mona Lisa" of funerary art.

Once home to one of the oldest banks in the world, this building is also where Marco Polo's famous travelogue was written.

This cathedral hides a sculpted dog that determines your fate and an unexploded shell from World War II.

Massive galleon from a box-office bomb docked in Genoa.

This peculiar Italian elevator runs both horizontally and vertically.

Unable to build support structures on glaciers, the engineers for this tramway were forced to design a unique system.

Trek up this glacier before it disappears.

A floating cat sanctuary on an Amsterdam canal.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

This unusual elevator doesn’t stop or slow down.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

A unique work of automotive art calls this shopping center home.

Cat art as far as the eye can see.