The village is particularly famous for its several days long annual late July, rock festival, River Party . It started in 1978. Most people camp out on specially prepared grounds in the forest near the stage. The bands come from the Greek rock scene, especially from Athens and Thessaloniki and with foreign guests, including from the wider region. Visitors also participate in extreme games
The area was ruled by the Ottomans until the Balkan Wars of 1913. Nestorio had 2,700 inhabitants in the beginning of the 20th century and most of them were slavophone (Slavic speaking) orthodox Christians and a few of them Vlachs. In the early 20th century the majority of the inhabitants of Nestorio accepted the rule of the Bulgarian Exarchate. According to the statistics of Vasil Kanchov (Macedonia. Ethnography and Statistics) the inhabitants of Nestorio in 1900 were Bulgarians. Nestorio, along with the rest of southern Macedonia, was incorporated into Greece in 1913 following the Balkan Wars.