Looming over the old town is the forbidding Castello Visconteo , built in 1360 for Galeazzo II Visconti. It now houses the Museo Civico . Intriguing collections include archaeological, ethnographic and art collections, plus displays on medieval Pavia, the Renaissance, the Risorgimento (the Italian reunification period) and, in the east tower, a section on Somalia (once an Italian colony).