Çatalca Peninsula
Turkey
The Çatalca Peninsula lies in the European section of Turkey (Thrace), extending from the southeast Balkans and separating the Black Sea from the Sea of Marmara on the western side of the strait of Bosphorus. Approximately two thirds of Istanbul, one of the most populous cities of the world, occupy its eastern part.
Data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).