Bratislava (Slovak pronunciation (help·info): [ˈbracɪslava], historically known by foreign an alternative names) is the capital of Slovakia, and with a population of about 427,000, the country's largest city. Bratislava is in the southwest of Slovakia on both banks of the Danube River. Bordering Austria and Hungary, it is the only national capital that borders two countries. It and Vienna are also two of Europe's closest national capitals, at less than 60 kilometres (37 mi) apart.