Conservation and restoration Monuments 25 Architecture 20 Antiquities 18 History 13 Historic buildings 11 Historic sites 11 more ... Buildings, structures, etc 9 Cultural property 6 Protection 6 Collection and preservation 5 Excavations (Archaeology) 5 Civilization 4 Antiquities, Roman 3 Social conditions 3 Urban renewal 3 City planning 2 Classical antiquities 2 Description and travel 2 Historic preservation 2 Tourism 2 Architecture and society 1 Architecture, Domestic 1 Architecture, Roman 1 Aristocracy (Social class) 1 Art and history 1 Art and society 1 Art, Italian 1 Art, Minoan 1 Brandenburger Tor (Berlin, Germany) 1 less ...