An unremarkable wooden wheel built into the side of one of Rome's oldest hospitals was part of a policy to reduce infant exposure.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

A hospital where antique dolls are given new life.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

A large replica of a monumental Roman inscription is located on the side of this museum.

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

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

A monumental fountain in Rome features a large statue of Moses that has been criticized for centuries.

In the early Roman Empire, people deemed traitors and criminals were tossed to their deaths from this rock.

This small church was constructed over the ruins of three temples dating to the Roman Republic.

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

A rare example of a medieval house in Rome adorned with a melancholic inscription.

This small, ancient Roman temple was once a church dedicated to the patron saint of penitents.

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

The only remaining arch of the oldest stone bridge in Rome stands in the middle of the Tiber.

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

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

Ancient ruins hidden underneath a modern luxury hotel.

An ancient Egyptian obelisk is now used to commemorate fallen Italian soldiers.

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

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

Inspired by the Rialto Bridge in Venice, these three clustered bridges were just one part of a Slovenian architect’s grand vision.

Two copies of a rejected Victorian-era lamp design still stand along the Thames River.

These former ticket office windows in London's underground now house pocket-size parks.