Budapestis the capital and the largest city of Hungary,and one of the largest citiesin the European Union. It is the country's principal political, cultural, commercial, industrial, and transportation centre, sometimes described as the primate city of Hungary. According to the census, in 2011 Budapest had 1.74 million inhabitants, down from its 1989 peak of 2.1 million due to suburbanisation.The Budapest Metropolitan Area is home to 3.3 million people. The city covers an area of 525 square kilometres (203 sq mi). Budapest became a single city occupying both banks of the river Danube with the unification of Buda and Óbuda on the west bank, with Pest on the east bank on 17 November 1873.
The Hungarian Parliament Building (Hungarian: Országház, pronounced [ˈorsaːkhaːz], which translates to House of the Country or House of the Nation), also known as the Parliament of Budapest for being located in that city, is the seat of the National Assembly of Hungary, one of Europe's oldest legislative buildings, a notable landmark of Hungary and a popular tourist destination of Budapest. It lies in Lajos Kossuth Square, on the bank of the Danube. It is currently the largest building in Hungary and still the tallest building in Budapest.