Buildings, structures, etc History 94 Historic buildings 52 Architecture 38 Buildings 36 Hotels 19 Architecture, Domestic 11 more ... Historic sites 11 Conservation and restoration 10 Social life and customs 10 Homes and haunts 9 Dwellings 6 Mansions 6 Statues 6 Railroads 5 Architecture, Victorian 4 Biography 4 Bridges 4 Criticism and interpretation 4 Histoire 4 Neighborhoods 4 Postcards 4 Walking 4 William Penn Statue (City Hall, Philadelphia, Pa.) 4 Architecture, Modern 3 Capital and capitol 3 Church buildings 3 Description and travel 3 Design and construction 3 Eclecticism in architecture 3 Exhibitions 3 Historic houses, etc 3 Public buildings 3 Sculpture 3 ARCHITECTURE 2 Abandoned buildings 2 Architects 2 Architectural & Industrial 2 Art collections 2 Auditoriums 2 less ...