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:
Ankara Roman world near Trier. The city was subsequently passed under the control of the Roman Empire. In 25 BC, Emperor Augustus raised it to the status of a "polis" and made it the capital city of the Roman province of Galatia. Ankara is famous for the "Monumentum Ancyranum" ("Temple of Augustus and Rome") which contains the official record of the "Acts of Augustus", known as the "Res Gestae Divi Augusti", an inscription cut in marble on the walls of this temple. The ruins of Ancyra still furnish today valuable bas-reliefs, inscriptions and other architectural fragments. Two other Galatian tribal centers,