Ok, so you're looking for the tourist office in Modena, which has moved and is scrunched in behind some warning tape because they're fixing the street, and you come upon this statue in a courtyard with seems to be primarily a car park. Frightening, no?
How did I know this was Perseus with the Head of Medusa? I looked it up in Lucia Impelluso's book Gods and Heroes in Art (check prices). If all this god and goddess stuff confuses you, and you like art, you may wish to look into this heavily illustrated discussion on the folks you'll find depicted in fine art.