Following The River

Tiber, or Tevere, or flavus(the blond, because the yellowish tones) is a good

Christmas decor on via Margutta

A nice itinerary to shoot&shop would guide you from Termini to Colosseo(subway) then afoot on via dei Fori Imperiali(ruins, tourists, some gladiators, street artists and small trade) towards Il Vittoriano and Piazza Venezia. You might want to climb the stairs of the giant monument dedicated to king Vittorio Emanuele II