Parks 23 History 14 Historic buildings 6 Architecture 4 Dwellings 4 Sculpture 4 City planning 3 more ... Description and travel 3 Water-supply 3 Architecture, Domestic 2 Bridges 2 Church buildings 2 Discovery and exploration 2 Monuments & memorials 2 Norse 2 Parades & processions 2 Public works 2 Railroad stations 2 Snow 2 Springs 2 Streets 2 Volunteer workers in parks 2 Watercolor painting 2 American Revolution Bicentennial, 1976 1 Amphitheaters 1 Aquatic sports 1 Audiences 1 Balloons (Aircraft) 1 Basses (Fish) 1 Blizzards 1 Buildings, structures, etc 1 Centennial celebrations 1 Children 1 Children fishing 1 Children playing in snow 1 Christmas 1 Civil engineers 1 Clubs 1 Contests 1 Department stores 1 less ...