Also consider

• Winterberg 39 properties
• Düsseldorf 32 properties
• Oberhausen 28 properties
• Monschau 15 properties
• Bochum 14 properties
• Wuppertal 14 properties
• Bonn 13 properties
• Hellenthal 12 properties
• Elbrinxen 10 properties
• Kronenburg 10 properties
• Duisburg 9 properties
• Bellersen 9 properties
• Mönchengladbach 8 properties
• Neuss 8 properties
• Schmallenberg 8 properties
• Mohnesee 7 properties
• Bleiwasche 7 properties
• Andreasberg 7 properties
• Sellinghausen 6 properties
• Schleiden 6 properties
• Essen 6 properties
• Altenfeld 6 properties
• Gelsenkirchen 6 properties
• Hildfeld 5 properties
• Nieheim 5 properties
• Eitorf 5 properties
• Cobbenrode 5 properties
• Aachen 5 properties
• Solingen 5 properties
• Koenigswinter 5 properties
• Xanten 5 properties
• Gemund 5 properties