Museo Archeologico di Villasimius

Tucked inside Cagliari's medieval Castello quarter, this small but fascinating museum showcases archaeological finds from the Villasimius area, spanning ancient Phoenician invasions through the Roman era. The standout highlight is a collection of Roman oil lamps recovered from Porto Giunco in 2015, only recently put on display after years of careful restoration. Entry is free if you're a local resident, and even if you're not, it's an affordable peek into the layered ancient history of this corner of Sardinia.