budapest | country | hungary <sep> budapest (uk: , us: ; hungarian pronunciation: [ˈbudɒpɛʃt] (listen)) is the capital and most populous city of hungary it is the ninth-largest city in the european union by population within city limits and the second-largest city on the danube river; the city has an estimated population of 1,752,286 over a land area of about 525 square kilometres (203 square miles) budapest, which is both a city and county, forms the centre of the budapest metropolitan area, which has an area of 7,626 square kilometres (2,944 square miles) and a population of 3,303,786; it is a primate city, constituting 33% of the population of hungarythe history of budapest began when an early celtic settlement transformed into the roman town of aquincum, the capital of lower pannonia the hungarians arrived in the territory in the late 9th century, but the area was pillaged by the mongols in 1241–42 re-established buda became one of the centres of renaissance humanist culture by the 15th century 
budapest is a city in hungary.budapest is the capital and most populous city of hungary