Gefyra, Thessaloniki

Gefyra (, previously Topçin) is a village and a community of the Chalkidona municipality. Before the 2011 local government reform it was part of the municipality of Agios Athanasios, of which it was a municipal district. The 2011 census recorded 3,059 inhabitants in the community. The community of Gefyra covers an area of 29.836 km2. 
History.
The village is the site of the surrender of the Ottoman garrison of Thessaloniki under Hasan Tahsin Pasha to the Greek army under Crown Prince Constantine during the First Balkan War (1912). The villa where the surrender took place now houses the Balkan Wars Museum.