History 33 Buildings, structures, etc 8 Intellectual life 7 Social conditions 7 City planning 6 Architecture 5 Economic conditions 5 more ... Social life and customs 5 Arts, American 4 African Americans 3 Antiquities 3 Buildings 3 City and town life 3 History and criticism 3 Manners and customs 3 September 11 Terrorist Attacks, 2001 3 Skyscrapers 3 Apartment houses 2 Avant-garde (Music) 2 Characters 2 Composers 2 Description and travel 2 Design and construction 2 Diedrich Knickerbocker 2 Dutch 2 Economic assistance 2 Environmental aspects 2 Environmental conditions 2 Excavations (Archaeology) 2 Families 2 less ...