Budapest is classified as a city.
Budapest . Budapest is both a city and county , and forms the centre of the Budapest Metropolitan Area , which has an area of 7,626 km2 and a population of 3.3 million , comprising 33 percent of the population of Hungary . Following the Battle of Mohács and nearly 150 years of Ottoman rule , the region entered a new age of prosperity , and Budapest became a global city after its unification in 1873 . Budapest is a leading R&D and financial centre in Central and Eastern Europe , the city has a gross metropolitan product more than $ 100 billion in 2015 , thereby the city is among the Top 100 GDP performing cities in the world Budapest is cited as one of the most beautiful cities in Europe , ranked as the most liveable Central and Eastern European city on EIU 's quality of life index , ranked as `` the world 's second best city '' by Condé Nast Traveler , and `` Europe 's 7th most idyllic place to live '' by Forbes .