(13 feet) higher than the original height of the hill. About one million cubic metres (35,000,000 cubic feet) of rock had to be excavated from the site. It was used to fill low-lying areas in the city. Most of the granite used was sourced from Australia. Twice the amount needed was quarried as a very high standard of granite was required particularly for the curved walls. It was proposed originally to demolish Old Parliament House so that there would be an uninterrupted vista from the New Parliament House to Lake Burley Griffin and the Australian War Memorial, but there were successful representations for the preservation of the historic building, which now houses a parliamentary museum. The original idea was for Parliament House to be open free to the public, and the sweeping lawns leading up to the entrances were intended to symbolise this. Layout The forecourt mosaic, Possum and Wallaby Dreaming, was designed by Indigenous Australian artist Michael Nelson Jagamarra, and represents a gathering of people. (See also above.) The public entrance to Parliament House opens into the main foyer leading into the Great Hall, which features a tapestry based on a painting by Arthur Boyd, the original of which is also displayed in the building. Functions that have parliamentary and federal relevance often take place here, but the Great Hall is also open to functions for the general public, such as weddings, and the nearby University of Canberra hosts graduation ceremonies here. Below the tapestry of the Great Hall is a removable division that opens onto the Members' Hall, which has a water feature at its centre. This is an area restricted to security-classified occupants of the building and special visitors. Directly ahead of the Members' Hall is the Ministerial Wing, housing the office suites of the Prime Minister and government Ministers. The Members' Hall has access to the House of Representatives and the Senate buildings to the left and right of the main entrance to the halls respectively. Public access to the visitors' galleries and the Main Committee Room is via an upper level reached by impressive marble staircases ascending from the entrance foyer. There are also 19 committee rooms that are open to the public and a highly secure Cabinet Room on the ground floor. House of Representatives In commemoration of the colour scheme of the British House of Commons, the House of Representatives is decorated in