Bunker di Villa Ada Savoia

It was built between 1940 and 1942 as a shelter for the royal family. There is no underground link to the Palazzina, which is why it was given a drive-in entrance where cars could be parked inside; it has armoured doors, air filtration, water and stores, and a second exit up a spiral stair from a small circular structure nearby that also ventilates it. No plans or cost schedules for its construction survive. It was abandoned after the war and heavily graffitied before the restoration.