Buapest (pronounced /ˈbu:dʌˌpɛʃt/ (AE), also /ˈbju:-/ (BE) or /ˈbʊ-/; Hungarian IPA: ['budɒpɛʃt]) is the capital city of Hungary. As the largest city of Hungary it serves as the country's principal political, cultural, commercial, industrial and transportation center and is considered an important hub in Central Europe. In 2007 Budapest had 1,696,128 inhabitants with an official agglomeration of 2,451,418 , down from a mid-1980s peak of 2.1 million. The city covers an area of 525 square kilometres (202.7 sq mi) within city limits. Budapest became a single city occupying both banks of the river Danube with the unification on 17 November 1873 of right-bank (west) Buda and Óbuda (Old Buda) together with Pest on the left (east) bank.