Buildings, structures, etc 117 History 63 Buildings 35 Historic buildings 28 Hotels 17 Architecture 16 Conservation and restoration 7 more ... Histoire 7 Historic sites 7 Social life and customs 7 Neighborhoods 6 Railroads 6 Statues 6 Architectural & Industrial 4 HISTORY 4 Liberty Bell 4 Mansions 4 Middle Atlantic (DC, DE, MD, NJ, NY, PA) 4 PHOTOGRAPHY 4 State & Local 4 Subjects & Themes 4 William Penn Statue (City Hall, Philadelphia, Pa.) 4 Architecture, Domestic 3 Architecture, Modern 3 Auditoriums 3 Church schools 3 Dwellings 3 Exhibitions 3 Historic houses, etc 3 Homes and haunts 3 Public buildings 3 Sculpture 3 Walking 3 ARCHITECTURE 2 Abandoned buildings 2 Architects 2 Architecture, Victorian 2 Biography 2 CHR 1789 2 Cable television 2 less ...