City planning 1,041 History 169 Regional planning 156 Cities and towns 133 Urban policy 92 Urbanization 85 Architecture 78 Urban renewal 74 Environmental aspects 72 Social aspects 64 Planning 51 Growth 49 Sustainable development 49 Sociology, Urban 36 Social conditions 34 Architecture and society 33 Public spaces 33 Economic aspects 28 Land use 24 City and town life 23 Urban ecology 23 Case studies 22 Sustainable urban development 22 Buildings, structures, etc 21 Political aspects 20 Technological innovations 20 Architecture, Modern 18 Economic conditions 18 Philosophy 18 Citizen participation 17