A detailed pachyderm supports Rome's smallest Egyptian obelisk.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

The yawning maw of this pagan visage is said to bite off the hands of liars.

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

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 square-domed symbol of resilience in the heart of the old Jewish Ghetto.

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.

Rome’s legendary peephole vista is also a former Crusader stronghold.

The Italian revolutionary's legendary wife is portrayed on horseback waving a gun and holding her child in this memorial on the Janiculum.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

A hidden workshop for creating and restoring Papal mosaic masterpieces.

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

Jesus' footprints and the first catacombs in the world.

2300-year-old Roman road connecting the empire.

The studio built by fascists in the hopes of "reviving the film industry" with the occasional propaganda film opportunity thrown in.

This ancient trail climbs the mountain where a Latin League cult worshipped Jupiter, its main deity.

Things seem to roll, flow and run uphill on this short patch of road near Ariccia, Italy.

The most visited, and possibly most controversial, museum in Germany.

Check the time in 145 countries at once with this East German relic.

This natural "sea of stones" was once used by the Romans as a quarry.

The sweet story of how American cargo planes became known as "Candy Bombers" during the Berlin Blockade.

The world's only silo that was topped by two revolving restaurants has unfortunately been demolished.