Schloss Oberhausen castle, Ludwig Galerie art gallery, Ruhr district, North Rhine-Westphalia, Germany, Europe

architecture art attraction attractions building buildings castle castles district europe european exterior exteriors famous federal frg galerie gallery german germany known ludwig nobody north nrw oberhausen of outdoor palace palaces photo photos renowned republic rhine rhine westphalia rhine westphalian ruhr schloss seeing shot shots sight sights site sites tourist well well known westphalia westphalian worth