Beirut is the capital and largest city of Lebanon. No recent population census has been done but in 2007 estimates ranged from slightly more than 1 million to slightly less than 2 million as part of Greater Beirut. Located on a peninsula at the midpoint of Lebanons Mediterranean coast, Beirut is the countrys largest and main seaport. It is one of the oldest cities in the world, inhabited more than 5,000 years ago. The first historical mention of Beirut is found in the ancient Egyptian Tell el Amarna letters dating from the 15th century BC. The Beirut River runs south to north on the eastern edge of the city. Beirut is Lebanons seat of government and plays a central role in the Lebanese economy, with most banks and corporations based in its Central District, Badaro, Rue Verdun, Hamra and Ashrafieh. Following the destructive Lebanese Civil War, Beiruts cultural landscape underwent major reconstruction. Identified and graded for accountancy, advertising, banking/finance and law, Beirut is ranked as a Beta World City by the Globalization and World Cities Research Network. In May 2015, Beirut was officially recognized as one of the New7Wonders Cities together with Vigan, Doha, Durban, Havana, Kuala Lumpur, and La Paz.