Plan of the Citadel of Ankara of the citadel enclose the Roman Agora or market place. During later periods the walls were repaired with the ruins of Roman structures, and this can be seen along the length of the outer wall. From all appearances, the decorated Roman building materials and statuary that went into reinforcing the citadel wall were arranged for at least an artistic if not a superstitious effect. Seven Christian crosses line the south face of the fortress, possibly to ward off enemies. The Ottomans rebuilt the crumbling walls and this became the center of the Ottoman city. Inside the citadel outer wall is the oldest mosque in Ankara, the Alaeddin Cami. The Alaeddin Mosque: This dates to the 12th century Seljuk period in Ankara. The beautifully preserved wooden mimber is inscribed with the date 1198, but much restoration work has been done on the small building. An interesting aspect of the mosque is the thick columns of the porch with their ancient capitals. The original wooden doors of the mosque are on display at Ankara’s Ethnographic Museum. Archaeological Museum: The museum is located in the old han district of the old city. It is on the southern slope of the citadel hill in the refurbished buildings of an Ottoman han and bedistan; these are the Kursunlu Han and the Mahmut Pa?a Bedesten. Both The Ottomans preferred the cities of Bursa and Istanbul to Ankara, however, and cast their eyes and banners toward the west. The city existed as a major center of trade and commerce during the Ottoman period because it was on an important caravan route. It was famous for its mohair from the Angora goat, wheat and barley. Ankaraâ€™s decline in importance was noted concurrently with that of the Ottoman governmentâ€™s in world affairs. The city took on a different significance, however, when Ataturk used it as his center of resistance in the Turkish War of Independence. A National Assembly* convened in Ankara in 1920, while the Ottoman government in Istanbul was signing a pact that would divide much of the country and put it in the hands of the victorious World War I allies. As a result of the Turkish resistance, led by Kemal Atatiirk, the allied plan was scrapped, and on October 29, 1923, the Republic of Turkey was proclaimed with Ankara as its capital. From that point on, the city has continued to grow in importance in world affairs as the devlopement of modern Turkey continues.