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;
Altındağ, Ankara remains one of the poorer quarters of the capital. The hillside is covered with illegally built gecekondu housing, home to low-income families. Among the housing there are some municipal buildings, public housing, state housing for civil servants and lots of small workshops doing car repairs and other light mechanical work. The ancient Ankara Castle is in Altındağ and there has recently been investment in restoration work. With this architectural heritage, Altındağ is a member of the Norwich-based European Association of Historic Towns and Regions. Altındağ includes parts of the historic city of Ankara, as well as the first National Assembly