District I is a small area in central Buda, including the historic Buda Castle. District II is in Buda again, in the northwest, and District III stretches along in the northernmost part of Buda. To reach District IV, one must cross the Danube to find it in Pest (the eastern side), also at north. With District V, another circle begins, it is located in the absolute centre of Pest. Districts VI, VII, VIII and IX are the neighbouring areas to the east, going southwards, one after the other.