1.   Decades ago, Bates used the abandoned concrete fortress as a platform for a pirate radio station, operating without license from the British government.

2.   Like Camden Yards in Baltimore two years before, Arlington evoked the era before ball parks became concrete fortresses.

3.   The ceremony was held in the Azizia barracks, a concrete fortress in the heart of Tripoli fortified with tanks, lookout posts and beds of nails.

4.   The old headquarters, a grim concrete fortress here, was converted into American military offices and is now being turned into university classrooms.

5.   The warehouse, a concrete fortress, has wide-open spaces for paintings, sculptures and installations by Philip Taaffe, Charles Ray, Beverly Semmes, Bedia and others.