Small on the outside, big on the inside, this church is an astonishing act of visual deception.

This historic recreationist school churns out warriors that may very well have had a fighting chance in Rome's pits of the day.

The mystic whose incorrupt corpse still attracts the faithful.

A stunning cemetery famous for its extraordinarily delicate & lifelike mourning sculptures.

A star-shaped fortress town fort built in the geometric model of the Renaissance utopian city.

Europe’s oldest natural human mummy.

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

The mummified relic of St. Antoninus.

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

This mosaic-lined medieval church was built by the world's first admiral and still holds mass in ancient Greek.

Erotic art covers the walls of the largest ancient pleasure palace.

The world's most active stratovolcano is almost always erupting.

The sinister ruins of one of the worst dam failures of the 20th century lie in this astonishing alpine setting.

An ancient artistic garden parlor full of hidden water wonders.

The Roman Emperor's lost summer home and grotto full of enormous sculptures sit along the Italian seashore.

This Tuscan lake hides a 13th century town that is still visible when the water recedes.

Gigantic mosaic sculptures of the figures on Tarot cards fill this colorful Tuscan garden.

An underground paleo-Christian burial site composed of the remains of several cemeteries and Basilicas.

Secret refuge and museum of the Duke of Florence.

The remains of a town so thoroughly destroyed by French forces that the citizens simply left.

A sunken idol welcomes parishioners to Davy Jones' Locker.

This Roman arch marks the location of an ancient gate at one of the Seven Hills of Rome.

The famous sculptor left his mark on this Italian wall in an internationally protected example of street art.

Medieval town turned hippie commune, once home to the secret foreskin of Jesus Christ.