The Fortress of Deva is a fortress located in the city of Deva, Hunedoara County, Romania, on top of a volcanic hill. The fortress is located atop a volcano in the Poiana Ruscă Mountain Range within the Western Carpathian Mountains of Romania. From the foot of the hill, the city of Deva spreads out, beginning with Magna Curia and the public park. …The Fortress of Deva is a fortress located in the city of Deva, Hunedoara County, Romania, on top of a volcanic hill. The fortress is located atop a volcano in the Poiana Ruscă Mountain Range within the Western Carpathian Mountains of Romania. From the foot of the hill, the city of Deva spreads out, beginning with Magna Curia and the public park. Nearby are most of the buildings of the administrative institutions of the city: the Court House, the Prefecture, the County Hall, the Finance Administration, the old police headquarters, the City Hall and two of the oldest schools in Deva: the Decebal National College and the Pedagogic Lyceum.