Ankara Treaty of Lausanne (1923), the Turkish nationalists replaced the Ottoman Empire with the Republic of Turkey on 29 October 1923. A few days earlier, Ankara had officially replaced Constantinople as the new Turkish capital city, on 13 October 1923. After Ankara became the capital of the newly founded Republic of Turkey, new development divided the city into an old section, called "Ulus", and a new section, called "Yenişehir". Ancient buildings reflecting Roman, Byzantine, and Ottoman history and narrow winding streets mark the old section. The new section, now centered on Kızılay Square, has the trappings of a more modern city:
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.