Palace. This hall is flanked by symmetrical corridors decorated with fresco paintings, which lead to the ante-rooms and debating chambers of the two Houses: the Members' Lobby and Commons Chamber to the north, and the Peers' Lobby and Lords Chamber to the south. Another mural-lined corridor leads east to the Lower Waiting Hall and the staircase to the first floor, where the river front is occupied by a row of 16 committee rooms. Directly below them, the libraries of the two Houses overlook the Thames from the principal floor. Norman Porch The grandest entrance to the Palace of Westminster is the Sovereign's Entrance beneath the Victoria Tower. It was designed for the use of the monarch, who travels from Buckingham Palace by carriage every year for the State Opening of Parliament. The Imperial State Crown, which is worn by the sovereign for the ceremony, as well as the Cap of Maintenance and the Sword of State, which are symbols of royal authority and are borne before the monarch during the procession, also travel to the Palace by coach, accompanied by members of the Royal Household; the regalia, as they are collectively known, arrive some time before the monarch and are exhibited in the Royal Gallery until they are needed. The Sovereign's Entrance is also the formal entrance used by visiting dignitaries, as well as the starting point of public tours of the Palace. From there, the Royal Staircase leads up to the principal floor with a broad, unbroken flight of 26 steps made of grey granite. The staircase is followed by the Norman Porch, a square landing distinguished by its central clustered column and the intricate ceiling it supports, which is made up of four groin vaults with lierne ribs and carved bosses. The Porch was named for its proposed decorative scheme, based on Norman history. In the event, neither the planned statues of Norman kings nor the frescoes were executed, and only the stained-glass window portraying Edward the Confessor hints at this theme. Queen Victoria is depicted twice in the room: as a young woman in the other stained-glass window, and near the end of her life, sitting on the throne of the House of Lords, in a copy of a 1900 painting by Jean-Joseph Benjamin-Constant which hangs on the eastern wall. The sixteen plinths intended for the statues now house busts of prime ministers who have sat in