Memorials at a Florence railway station remember the citizens who were deported from Italy and sent to extermination camps.

A local student's chance encounter with Keith Haring led to the creation of one of Europe's largest murals.

Inside features a display of how artistic crucifixes transformed throughout the centuries.

The first botanical garden, a feather in the cap of the Grand Duke of Tuscany.

The only visible reminders of an elaborate engineering project that kept the tower from reaching the tipping point.

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

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

Roman-era ships unearthed...

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

This abandoned Brutalist treehouse is a hidden architectural relic.

The underground sanctuary of a mysterious ancient cult.

Breathtaking and huge 430 year old maps of Italy.

The Vatican's secret porn-festooned bathroom was painted in erotic murals by one of the greatest artists of the Renaissance.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

If you want to talk to the Pope you will have to stare down this surreal vision of Jesus rising from a nuclear hell.

A small cell adjacent to this church was once the bedroom for a renowned saint.

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

More sculpture than building, this architecturally significant temple was built on the spot of Saint Peter's crucifixion.

Among the busts of heroes of the Roman Republic of 1849, there is also a statue of a boy and his dog.

An oasis of beauty, tranquility and botanical research in the middle of Rome.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

The charred, dead skeleton of an oak tree is said to have consoled a dying 16th-century Italian poet.

The first Russian Orthodox church in the Catholic city of Rome in almost a thousand years.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.