The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

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

Plaques on its facade commemorate the Tiber's most destructive deluges.

Believed to be the remains of the lost Temple of Minerva, this nymphaeum has been known by its misnomer to this day.

One of Rome's most picturesque and original bridges was also a popular choice for Grand Tour artists.

Legend has it that this bronze orb, which sat atop an ancient Egyptian obelisk, once held the ashes of Julius Caesar.

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

A massive marble foot is tucked away in a small alley near the Pantheon.

This gallery commissioned by Cardinal Spada is known for its magnificent optical illusion.

This is the oldest Roman-made bridge in the city still existing in its original state.

This curious, round temple is the oldest still-standing marble building in Rome.

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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

This subterranean shrine beneath a bike rental store celebrates the iconic Italian scooter.

Ancient ruins hidden underneath a modern luxury hotel.

Gods clash with machines in a power plant regenerated as a museum.

A magnificent waterfall is also home to the remains of a Roman hydraulic engineering system.

A forgotten "city of water" underneath the famous Trevi district.

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

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

This hydrochronometer was invented by a Dominican monk and is a prime feature in this garden.

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

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

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