Complex sentence: The 2001 Visitor Centre was designed by van Heyningen and Haward Architects for the National Trust and involved the overall planning of the estate, the design of an exhibition hall and visitor facilities, car parking and the restoration of a fine Edwardian house to provide additional facilities.
Split into simpler sentences: The 2001 Visitor Centre was designed by van Heyningen and Haward Architects for the National Trust. Their work included the overall planning of the estate, the design of an exhibition hall and visitor facilities, car parking and the restoration of a fine Edwardian house to provide additional facilities.