A treasure trove of Renaissance-era funerary art in a Roman church built on top of Nero's grave.

This large, circular tomb is the final resting place of the first emperor of Rome.

A Nesting Doll of Churches.

The underground sanctuary of a mysterious ancient cult.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

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

Every day is like Christmas on this street where the traditional Neapolitan nativity scene comes to life.

According to the legend, this structure was built in a single night with the help of the devil.

A large statue of Pope Gregory XIII in Bologna was disguised as Saint Petronius to avoid destruction.

In a city that boasts four separate inclined cable railways, this is one of the busiest funicular lines in the world.

This shining multicolored metro station deep under Naples is said to be the most beautiful in Europe.

The oldest volcanology research center in the world.

This clifftop arch is a natural stunner.

This stately palace, first built in the 16th century, was converted into a prison in 1830.

Legend says this mysterious stone head belongs to a woman who was petrified by an alchemist.

In Florence's great Duomo, a 26 foot fresco honors a mercenary famous for attacking Florence.

This strange bovine gargoyle is said to have been put in as a passive aggressive form of revenge.

Legend has it this fountain built to symbolize the Pope’s power hides a strange secret concerning Neptune's manliness.

Over 100 towers were built in Bologna during the Middle Ages, but only 22 survive.

A small window on Via Piella offers a lovely and rare peek at Bologna's lost canals.

The city of Parma's cathedral is home to one of the greatest illusionistic frescoes of the Renaissance.

Claude Monet immortalized this medieval bridge in two of his paintings.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

This cemetery features modernist statues as strange as its name.