Budapest Walkabout Recent project ''Budapest Walkabout'' featuring residents and public of Budapest, the capital and the largest city of Hungary. It is the country's principal political, cultural, commercial, industrial, and transportation centre, sometimes described as the primate city of Hungary. In 2011, according to the census, 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 (202.7 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.