Old batteries and frog skeletons reside in this lakeside monument to Alessandro Volta.

Caligula's colossal pleasure ships, discovered by Mussolini only to be lost in flames.

The only substantial part of Nazi Germany's formidable defensive line through Northern Italy that survives today, largely intact.

A massive mausoleum towers over the gravestones in a 19th-century Italian "model village."

This ancient Roman arch misled treasure hunters for centuries.

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

Does this strange mural depict witches battling beneath a penis tree?

A unique form of erosion created an uncanny landscape of boulders perched atop slender columns of clay.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

This centuries-old Italian chapel hangs midway down a sheer cliffside.

Thousands of well-dressed mummies below a monastery.

Hundreds of thousands of ancient documents offer a unique glimpse into Jewish life in Cairo.

The forgotten mummies of Dakhla oasis.

Unconventional site where the tracks of Zurich tramcars intersect.