City planning History 139 Regional planning 114 Cities and towns 92 Urban policy 64 Urbanization 61 Environmental aspects 54 Urban renewal 52 Architecture 49 Social aspects 39 Sustainable development 39 Growth 38 Planning 33 Sociology, Urban 29 Social conditions 25 Public spaces 24 Architecture and society 23 Urban ecology 21 Case studies 20 Economic aspects 20 City and town life 18 Architecture, Modern 16 Political aspects 16 Economic conditions 15 Land use 15 Buildings, structures, etc 14 Technological innovations 14 Globalization 13 Politics and government 13 Citizen participation 12