Preveza ) is a town in the periphery of Epirus, northwestern Greece, located at the mouth of the Ambracian Gulf. It is the capital of the peripheral unit of Preveza, which is part of the periphery of Epirus. An immersed tunnel, completed in 2002 which runs between Preveza and Actium, connects the town Preveza to western Acarnania in Aetolia-Acarnania region. The ruins of the ancient city of Nicopolis lie 7 km north of the city. Inside Preveza municipality there are the ruins of five ancient cities or citadels, Ancient Nicopolis, Berenike, Cassope, Elatria and Trikastron, while also exist five fortresses.