Another series of expansion was undertaken by the museum during the 1970s, as a part of a new three-phased expansion plan; with its first two phases designed by John C. Parkin. The first phase of the expansion was completed in 1974, which saw the restoration of the Grange, and the opening of the Henry Moore Sculpture Centre, a centre which Moore helped design. Moore choose the dimensions for the centre, the colour of the floor and the walls, and saw the installation of a skylight in the centre, in order to allow more natural light into the gallery. The centre saw little alteration to its design during the museum's expansion in the early 2000s, with the exception of a opening, providing access to the Galleria Italia.