Budapest is the capital of Hungary. Budapest became a single city occupying both banks of the river Danube with a unification on 17 November 1873 of west-bank Buda and Obuda withe east-bank Pest. Cited as one of the most beautiful cities in Europe, its extensive World Heritage Site includes the banks of the Danube, the Buda Castle Quarter, Heroes' Square etc. The city attracts about 2.7 million tourists a year, making it the 37th most popular city in the world. It is also ranked as "Europe's 7th most idyllic place to live" by Forbes, and as the 9th most beautiful city in the world by UCityGuides. It is the highest ranked Central/Eastern European city on Innovation Cities' Top 100 index.Thanks Antal!