City planning History 147 Regional planning 115 Cities and towns 92 Urban policy 66 Urbanization 63 Architecture 54 Environmental aspects 54 Urban renewal 52 Social aspects 40 Sustainable development 39 Growth 38 Planning 33 Sociology, Urban 30 Public spaces 25 Social conditions 25 Architecture and society 23 Economic aspects 21 Urban ecology 21 Case studies 20 Buildings, structures, etc 19 City and town life 18 Architecture, Modern 16 Economic conditions 16 Political aspects 16 Land use 15 Technological innovations 14 Globalization 13 Politics and government 13 Citizen participation 12