Stone memorial that's said to predict the death of the pope and the site of the Cadaver Synod.

Fountain where visitors can earn a license to be mad.

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

This private skyway is filled with art and was expanded explicitly so that Hitler could appreciate a river.

Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

Secret refuge and museum of the Duke of Florence.

These medieval skyscrapers dominate the skyline of this small Tuscan town.

A Nesting Doll of Churches.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome’s legendary peephole vista is also a former Crusader stronghold.

A dismembered holy head stares out from her beautiful reliquary at the St. Dominic Basilica.