Secret refuge and museum of the Duke of Florence.

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

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

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

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

Its interior is adorned with some of the best examples of early Christian mosaics.

A huge enchanting public park just outside the ancient walls of Rome.

The mystic whose incorrupt corpse still attracts the faithful.

Museum dedicated to literary greats of the Romantic Period is also the home in which Keats met his untimely end.

Architectural monsters are devouring this palace's every door and window.

Inside this building is another country within Rome, a sovereign entity without a physical territory.

A small but very fascinating fountain in the center of Rome with four books and a deer carved.

An expansive collection donated by an heirless nobleman formed this admission-free civic museum.

This unassuming bridge is most likely one of Michelangelo's unfinished masterworks.

This hidden alley near the location of Rome's first theater was the site of a curious miracle.

These hut foundations are believed to be the residence of Romulus, founder of Rome.

An ancient Roman temple first dedicated to an emperor's wife is now a church.

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

This ancient market is often referred to as the oldest shopping mall in the world.

This statue is the only female representation of Rome's "talking statues."

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

A 15th-century monumental Latin inscription on this house celebrates Lorenzo Manilio's love for Rome.

In Rome’s Jewish ghetto, a 200-year-old bakery still makes the neighborhood’s historic sweets.

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