Ankara headquarters of the Turkish Aerospace Industries, MKE, ASELSAN, Havelsan, Roketsan, FNSS, Nurol Makina, and numerous other firms are located. Exports to foreign countries from these defence and aerospace firms have steadily increased in the past decades. The IDEF in Ankara is one of the largest international expositions of the global arms industry. A number of the global automotive companies also have production facilities in Ankara, such as the German bus and truck manufacturer MAN SE. Ankara hosts the OSTIM Industrial Zone, Turkey's largest industrial park. A large percentage of the complicated employment in Ankara is provided by the state institutions;
Roman Baths of Ankara settlement material at the base. The ancient city of Ancyra stood at the crossroads between the East and West and during the Roman period, the city's strategic location led to its rise to prominence as the capital of the province of Galatia. To the east of this plateau ran a roadway from the city's sacred precinct, the area of the Temple of Augustus, a section of which, flanked by second or third century grey-veined marble columns with Corinthian capitals, was uncovered during the construction of Çankiri Caddesi, during the development of Ankara into the new Turkish capital in the 1930s.