History 153 Social aspects 147 Space vehicles 99 Space (Architecture) 95 Public spaces 90 Space and time 82 City planning 75 Architecture 73 Philosophy 73 Banach spaces 58 History and criticism 57 Design and construction 54 Cities and towns 51 Human geography 51 Astronautics 49 Social conditions 40 Space in economics 39 Political aspects 38 Architecture and society 33 Design 33 Space perception 32 Airplanes 28 Spatial behavior 27 Psychological aspects 26 Hilbert space 24 Linear topological spaces 23 Information technology 22 Planning 22 Sociology, Urban 22 Space (Art) 21