The Republic of Turkey consists of Asia Minor, or Anatolia (Anadolu); the small area of eastern Thrace (Trakya), or Turkey in Europe; and a few offshore islands in the Aegean Sea, with a total area of 780,580 sq km (301,384 sq mi), extending about 1,600 km (994 mi) SE – NW and 650 km (404 mi) NE – SW . Comparatively, the area occupied by Turkey is slightly larger than the state of Texas. Of the overall area, 97% is in Asia, and 3% in Europe. Turkey lies athwart the important Black Sea straits system—the Dardanelles, the Sea of Marmara, and the Bosporus. It is bordered on the N by the Black Sea, on the NE by Georgia and Armenia, on the E by Iran, on the SE by Iraq, on the S by Syria and the Mediterranean Sea, on the W by the Aegean Sea, and on the NW by Greece and Bulgaria, with a total boundary of 2,648 km (1,645 mi) and a coastline of 7,200 km (4,474 mi). Turkey's capital city, Ankara, is located in the northwest central part of the country.