7 km. Northeast of Preveza, in a green landscape is the archaeological site of Nicopolis. The city was founded by Octavian Augustus in commemoration of his victory in the Battle of Actium in 31 BC over Anthony and Cleopatra. Octavian made adorned the city and the surrounding area with magnificent public buildings and other projects, such as the theater, the Nymphaeum, the Baths, the Odeum, the Gymnasium, the Aqueduct, the monument of August. The impressive Byzantine walls and mosaics of the Basilica Doumetios and Alkison witness the glory of the city during the early Christian centuries.