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B Budapest00005
·Cited as one of the most beautiful cities in Europe, Budapest's extensive World Heritage Site includes the banks of the Danube, the Buda Castle Quarter, Andrássy Avenue, Heroes' Square and the Millennium Underground Railway, the second-oldest metro line in the world. It has around 80 geothermal springs, the world's largest thermal water cave system, second largest synagogue, and third largest Parliament building and has a population of 9.9 million.
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