Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
For the lake in northern Greece, see Lake Vistonida.
Municipal unit in Greece
Vistonida (Greek: Βιστωνίδα) is a former municipality in the Xanthi regional unit, East Macedonia and Thrace, Greece. It was named after Lake Vistonida. Since the 2011 local government reform it is part of the municipality Abdera, of which it is a municipal unit. The municipal unit has an area of 159.524 km. Population 9,730 (2021). The seat of the municipality was the town Genisea.