Historic buildings History 29 Conservation and restoration 21 Architecture 11 Description and travel 9 Historic sites 3 Pictorial works 2 more ... 338 Spruce Street (Philadelphia, Pa.) 1 Archaeology 1 Architecture, Colonial 1 Arsenals 1 Buildings, structures, etc 1 Church buildings 1 Convention facilities 1 Directories 1 Environmental impact analysis 1 Frankford Arsenal (Philadelphia, Pa.) 1 Germantown, Battle of, Philadelphia, Pa., 1777 1 Guidebooks 1 Homes and haunts 1 House furnishings 1 Legislators 1 Mints 1 National parks and reserves 1 Parks 1 Signs and signboards 1 Walking 1 less ...