Bratislava Castle is the main castle of Bratislava, the capital of Slovakia. The massive rectangular building with four corner towers stands on an isolated rocky hill of the Little Carpathians, directly above the Danube river, in the middle of Bratislava. Because of its size and location, it has been a dominant feature of the city for centuries. The location provides excellent views of Bratislava, Austria and, in clear weather, parts of Hungary.