Historic buildings History 56 Conservation and restoration 31 Buildings, structures, etc 29 Architecture 21 Description and travel 17 Historic sites 13 more ... Homes and haunts 10 Historic houses, etc 6 Architecture, Domestic 5 Buildings 5 Social life and customs 5 Architects 3 Church buildings 3 Dwellings 3 Historic preservation 3 National parks and reserves 3 Pictorial works 3 Apartment houses 2 City halls 2 Coats of arms 2 Directories 2 Engineers, American 2 Environmental impact analysis 2 Guidebooks 2 Histoire 2 Libraries 2 Lieux historiques 2 Municipal buildings 2 Neighborhoods 2 Parks 2 Periodicals 2 Residences 2 Revolution, 1775-1783 2 Suburbs 2 Travel 2 Walking 2 338 Spruce Street (Philadelphia, Pa.) 1 Academies and Institutes 1 Américains d'origine française 1 less ...