As the city of Rome makes progress on its third underground metro line, archaeologists are helping builders avoid ruins near the new Venezia station. One-third of Line C's stations are in areas with significant ruins.

Rome is a city defined by its antiquities -- places like the Coliseum, the Forum and the Pantheon. But the costs of maintaining it all has some Romans worried it could break the bank.

Go behind the scenes with an exclusive video tour of the Parthenon in Greece's new Acropolis Museum.

A collection of sculptures from Greece's famed Parthenon have a permanent home in the British Museum. Should they be returned to Greece? Students at the American College of Greece say yes, but Dimitris Plantzos of the University of Ioannina holds the rare view that the sculptures don't need to be returned.