Arnissa

Arnissa (, before 1926: , "Ostrovon";) is a town in the Pella regional unit of Macedonia, Greece. It is located near the Lake Vegoritida and Mount Kaimakchalan and is the seat of the Vegoritida Municipality. It has a population of 1,557 (as of 2011).
History.
The Battle of Ostrovo was fought near the town in 1041.