The Marmara region (Turkish: Marmara Bölgesi) is a geographical region of Turkey.
Located in East Thrace, it is bordered by Greece and the Aegean Sea to the west, Bulgaria and the Black Sea to the north, the Black Sea Region to the east, and the Aegean Region to the south. At the center of the region is the Sea of Marmara, which gives the region its name. The largest city in the region is Istanbul. Other big cities are Bursa, İzmit, Balıkesir, Tekirdağ, Çanakkale and Edirne.
The Central Anatolia region (Turkish: İç Anadolu Bölgesi) is a geographical region of Turkey. The largest city in the region is Ankara, the capital of Turkey. Other big cities are Konya, Kayseri, Eskişehir, Sivas, Aksaray and Kırşehir.
Located in Central Turkey, it is bordered by the Aegean region to the west, the Black Sea region to the north, the Eastern Anatolia region to the east, and the Mediterranean region to the south. It also shares a very slight border with the Marmara region in Bilecik Province.
The Eastern Anatolia region (Turkish: Doğu Anadolu Bölgesi) is a geographical region of Turkey. The most populous province in the region is Van Province. Other populous provinces are Malatya, Erzurum and Elazığ.
It is bordered by the Black Sea Region and Georgia in the north, the Central Anatolia Region in the west, the Mediterranean Region in the southwest, the Southeastern Anatolia Region and Iraq in the south, and Armenia, Azerbaijan, and Iran in the east.
The Southeastern Anatolia region (Turkish: Güneydoğu Anadolu Bölgesi) is a geographical region of Turkey. The most populous city in the region is Gaziantep. Other big cities are Şanlıurfa, Diyarbakır, Mardin and Adıyaman.
It is bordered by the Mediterranean region to the west, the Eastern Anatolia region to the north, Syria (Rojava) to the south, and Iraq (Southern Kurdistan) to the southeast.
The Aegean region (Turkish: Ege Bölgesi) is one of the 7 geographical regions of Turkey. The largest city in the region is İzmir. Other big cities are Manisa, Aydın, Denizli, Muğla, Afyonkarahisar and Kütahya.
Located in western Turkey, it is bordered by the Aegean Sea to the west, the Marmara region to the north, the Central Anatolia Region to the east, and the Mediterranean Region to the south.
The Black Sea region (Turkish: Karadeniz Bölgesi) (sometimes referred to as Pontus or Pontos) is a geographical region of Turkey. The largest city in the region is Samsun. Other big cities are Zonguldak, Trabzon, Ordu, Tokat, Giresun, Rize, Amasya and Sinop.
It is bordered by the Marmara Region to the west, the Central Anatolia Region to the south, the Eastern Anatolia Region to the southeast, the Republic of Georgia to the northeast, and the Black Sea to the north.