Buildings, structures, etc History 50 Historic buildings 23 Buildings 21 Hotels 17 Architecture 13 Historic sites 7 more ... Conservation and restoration 6 Social life and customs 6 Railroads 5 Statues 5 Histoire 4 William Penn Statue (City Hall, Philadelphia, Pa.) 4 Dwellings 3 Exhibitions 3 Homes and haunts 3 Mansions 3 Public buildings 3 Walking 3 Abandoned buildings 2 Architectural & Industrial 2 Architecture, Domestic 2 Architecture, Modern 2 Auditoriums 2 CHR 1789 2 Church history 2 Church schools 2 Design and construction 2 HISTORY 2 Historic houses, etc 2 Jews 2 Liberty Bell 2 Middle Atlantic (DC, DE, MD, NJ, NY, PA) 2 Neighborhoods 2 PHOTOGRAPHY 2 Prisons 2 Sculpture 2 State & Local 2 Subjects & Themes 2 ARCHITECTURE 1 less ...