Buildings, structures, etc History 70 Buildings 39 Historic buildings 35 Architecture 23 Hotels 20 Conservation and restoration 10 more ... Histoire 7 Historic sites 7 Social life and customs 7 Statues 7 Architecture, Victorian 6 Neighborhoods 6 Railroads 6 Architecture, Domestic 5 Historic houses, etc 5 Homes and haunts 5 Architectural & Industrial 4 Architecture, Modern 4 Biography 4 Design and construction 4 HISTORY 4 Liberty Bell 4 Mansions 4 Middle Atlantic (DC, DE, MD, NJ, NY, PA) 4 PHOTOGRAPHY 4 Sculpture 4 State & Local 4 Subjects & Themes 4 William Penn Statue (City Hall, Philadelphia, Pa.) 4 Auditoriums 3 Church schools 3 Criticism and interpretation 3 Dwellings 3 Exhibitions 3 Public buildings 3 Walking 3 ARCHITECTURE 2 Abandoned buildings 2 Apartment houses 2 less ...