Geothermal waterfalls in Tuscany.

What appears to be an ancient Roman temple is actually a Catholic church.

Water and windows define this defensive Italian well.

The giant skeleton sculpture is surprisingly well-traveled.

A 16th-century horror show built in a lovely Italian garden.

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 poignant art installation raises awareness of violence against women.

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

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

This monumental fountain has moved around the city multiple times.

This emotive sculpture was originally created for the 1878 World's Fair.

A beautiful Victorian statue shows France's enduring love of the rhinoceros.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the 20th century.

One of the world's oldest and most massive living organisms is a grove of quaking aspens.

The walls and streets of the ancient city are peppered with penises.

A trail of footprints discovered after a landslide was left not by the Devil, as originally believed, but by an early human ancestor.

Remnants of a wall built to separate Black residents of Hall's Hill from a newly built subdivision are a grim reminder of segregation in 20th-century Virginia.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

Granny Smiths and Fujis can both be traced back to Kazakhstan, where apples still grow wild.

The last SR-71 ever constructed.

A stoic rock cairn is all that remains to remember one of the more brutal instances of frontier treachery in American history.