Arnissa

Arnissa (Άρνισσα; Macedonian Slavic/Острово, Ostrovo) is a town in the Pella Prefecture 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 1,550 (as of 2001).

History
The Battle of Ostrovo was fought near the town in 1041. In 1845 the Russian Slav scholar notes Ostrovo as a nice village situated near a lake and populated by Bulgarians and Turks.