Presented to the city in 1910 for public use, these brass markers show varying lengths.

Be on the lookout for the symbolic insect all over the city.

A giant wooden soda bottle pays homage to a distinctly British drink on the very spot where it was invented.

Have a seat with the father of modern computing at this Manchester monument.

Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

Breathtaking and huge 430 year old maps of Italy.

A rare specimen of the ancient piggy bank of Java resides in one of the unassuming corners of the Ashmolean.

The first statue to be added to Saint Peter's Square in over 350 years is an ode to migrants and refugees around the world.

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

A fortified medieval basilica on the Caelian Hill preserves extraordinary frescoes and one of Rome's most beautiful hidden cloisters.

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

Inside this McDonald's you can dine on your Big Mac and fries next to a 2,500-year-old Roman wall.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

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

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

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

The remains of this 2nd-century Roman temple are incorporated into a modern building.

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

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

One of Catholicism's four major basilicas has a series of papal portraits that are said to predict the end of the world.

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

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

A detailed pachyderm supports Rome's smallest Egyptian obelisk.