Much of ancient Rome, of course, "remains hidden under visitors' feet," said Tony Perrottet in Smithsonian. Visit the Pantheon or the Colosseum and you'll notice that the buildings' foundations sit ...

Rome (CNN) — Rome, as it’s often said, wasn’t built in a day. And nowhere is that more evident than its state-of-the-art Metro Line C, an ambitious project meant to help relieve the Italian capital’s ...

Countless Roman structures are fascinating at surface level, but Rome is quite layered — literally. Some areas of present-day Rome actually sit on top of other ancient structures without most visitors ...

Sprawling across the valley of the Colosseum and the Palatine and Esquiline Hill in central Rome are the remarkably well-preserved remains of Emperor Nero’s Domus Aurea, his so-called Golden House.