An unusual slot canyon in the Aztec/Navajo Sandstone has a cross-section like an inverted old-fashioned keyhole.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

Sip a Negroni Sbagliato in the bar that invented it.

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

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

This small Milan street is filled with colorful homes and a rich history.

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.

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

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

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

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.

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

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

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

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

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

A massive marble foot is tucked away in a small alley near the Pantheon.

Plaques on its facade commemorate the Tiber's most destructive deluges.

Remnants of a 4th-century church with vivid medieval frescoes and ancient sarcophagi hide beneath this old basilica.

A statue representing a lost Roman profession that was vandalized for centuries.

The martyr's wax-enhanced skeletal remains lie preserved in a glass case in the Santa Maria della Vittoria in Rome.

A tiny survivor of the Donner Party disaster.