[custom_adv] Damascus is the capital of the Syrian Arab Republic; it is also the country's largest city, following the decline in population of Aleppo due to the battle for the city. [custom_adv] It is colloquially known in Syria as ash-Sham and titled the City of Jasmine. In addition to being one of the oldest continuously inhabited cities in the world, Damascus is a major cultural center of the Levant and the Arab world. The city has an estimated population of 1,711,000 as of 2009. [custom_adv] Geographically embedded on the eastern foothills of the Anti-Lebanon mountain range 80 kilometres (50 mi) inland from the eastern shore of the Mediterranean on a plateau 680 metres (2,230 ft) above sea level, Damascus experiences a semi-arid climate because of the rain shadow effect. [custom_adv] Located in south-western Syria, Damascus is the center of a large metropolitan area of 2.7 million people (2004). The Barada River flows through Damascus. [custom_adv] First settled in the second millennium BC, it was chosen as the capital of the Umayyad Caliphate from 661 to 750. After the victory of the Abbasid dynasty, the seat of Islamic power was moved to Baghdad. [custom_adv] Damascus saw a political decline throughout the Abbasid era, only to regain significant importance in the Ayyubid and Mamluk periods. Today, it is the seat of the central government and all of the government ministries. [custom_adv] The modern city has an area of 105 km2 (41 sq mi), out of which 77 km2 (30 sq mi) is urban, while Jabal Qasioun occupies the rest. [custom_adv] The old city of Damascus, enclosed by the city walls, lies on the south bank of the river Barada which is almost dry (3 cm (1 in) left). [custom_adv] In the 19th century outlying villages developed on the slopes of Jabal Qasioun, overlooking the city, already the site of the al-Salihiyah neighborhood centered on the important shrine of medieval Andalusian Sheikh and philosopher Ibn Arabi. [custom_adv] These new neighborhoods were initially settled by Kurdish soldiery and Muslim refugees from the European regions of the Ottoman Empire which had fallen under Christian rule. Thus they were known as al-Akrad (the Kurds) and al-Muhajirin (the migrants). They lay 2–3 km (1–2 mi) north of the old city. [custom_adv] A Europeanized residential quarter soon began to be built on the road leading between al-Marjeh and al-Salihiyah. The commercial and administrative center of the new city gradually shifted northwards slightly towards this area. [custom_adv] Damascus used to be surrounded by an oasis, the Ghouta region , watered by the Barada river. The Fijeh spring, west along the Barada valley, used to provide the city with drinking water and various sources to the west are tapped by water contractors.