There must be a pun in this haystack somewhere...

Yo, Adrian!

The location where the famed author and abolitionist began his journey to freedom.

The only female equestrian statue in Washington, D.C. is a 15th-century French heroine.

A secret hatch containing two parchments was discovered in this statue over 40 years after its installation.

This curious sculpture represents the perseverance needed to take to the skies.

Also known as the Square Colosseum, this building is a prime example of fascist-era rationalist architecture.

The Pope’s secret escape route.

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

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.

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

This hill made entirely of ancient Roman jars was simply a garbage dump to the people of the time.

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

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

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

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

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

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.

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

A detailed pachyderm supports Rome's smallest Egyptian obelisk.

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