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Subject
- World Heritage areas24
- History8
- Buildings, structures, etc6
- Antiquities, Roman5
- Architecture5
- Historic buildings5
- Conservation and restoration4
- Cultural property4
- Buildings3
- Limes (Roman boundary)3
- Archaeological museums and collections2
- Art2
- Art, German2
- Boundaries2
- Civilization2
- Excavations (Archaeology)2
- Fortification2
- Fortification, Roman2
- Industrielle Kulturlandschaft Zollverein (Essen, Germany)2
- Law and legislation2