Istrana  Istrana is a "comune" (municipality) in the Province of Treviso in the Italian region Veneto, located about northwest of Venice and about west of Treviso. As of 31 December 2004, it had a population of 8,223 and an area of . The municipality of Istrana contains the "frazioni" (subdivisions, mainly villages and hamlets) Sala, Pezzan, Ospedaletto, and Villanova. And the Istrana Air Base. Istrana borders the following municipalities: Morgano, Paese, Piombino Dese, Trevignano, Vedelago. Instrana has a humid subtropical climate (Köppen: "Cfa"), similar to the rest of northern Italy. Istrana is twinned with: