The Nuremberg castle (Nürnberger Burg) in Southern Germany (Middle-Franconia in Bavaria) has been watching over the city for about 1000 years! It was build on a massive sandstone rock. In the panorama picture you can see, that the castle comprises three different parts.
The building on the right side of the picture is now Nuremberg’s youth hostel (= die Jugendherberge [‘di: ‘ju:ɡɘnthɛɐbɛrɡɘ])
(pic via wikipedia)
i was there. i spent a few nights at the hostel.