Skyscrapers Gratte-ciel 85 Architecture 51 Buildings, structures, etc 47 History 36 Design and construction 35 Architecture, Modern 33 more ... Buildings 31 skyscrapers 25 Hochhaus 24 Tall buildings 21 Office buildings 19 Histoire 18 Constructions 16 City planning 14 Immeubles de grande hauteur 14 Architektur 13 Wolkenkrabbers 11 Criticism and interpretation 10 September 11 Terrorist Attacks, 2001 9 Architecture and society 8 Competitions 8 Architects 7 Immeubles de bureaux 7 Architectural photography 6 Art deco (Architecture) 6 Social aspects 6 Architecture et société 5 Aspect de l'environnement 5 Building 5 less ...