Architectureal fantasy quarter of Rome.

The final resting place of the poets Shelley and Keats.

Charles Dickens was not a fan of the ghastly wall dressings in this 6th century church.

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

An alchemist's "magic door" stands in the middle of a Roman park.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

St. Francesca Romana, patron saint of drivers, resides in the church she founded.

A Nesting Doll of Churches.

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

A sculpture serving as an homage to Pope John Paul II.

Installed in an act of one-upsmanship, the annual sundial in this church is also a symbolic victory for the Gregorian calendar.

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

The "Greatest Sewer" of ancient Rome is one of the oldest sewer systems in the world, and is still in use.

A mysterious chasm in the heart of the ancient Roman Forum, the Lacus Curtius was once believed to be a gateway to hell.

The mystic whose incorrupt corpse still attracts the faithful.

This former Roman Catholic Church still contains the embalmed hearts and organs of 22 popes.

One of several skulls claiming to belong to the beheaded St. John the Baptist is on display at this Roman church.

At the crypt of St. Mary of Eulogies and the Dead you are left alone to ponder mortality among piles of skulls.

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

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

Hundreds of lucky felines haunt the ruins where Caesar was murdered.