Houses of Parliament, also known as the Palace of Westminster, are home to the House of Commons and the House of Lords and the famous clock tower Big Ben is London's most famous landmark..

The Houses of Parliament contain 1,000 rooms, 11 courtyards, 8 bars and 6 restaurants - none open to the public.The Palace of Westminster is dominated by its famous clock tower, 316 feet high and 40 feet square, with 393 steps to the very top. Big Ben is not the clock but the great bell that strikes each hour, there are also four quarter-hour bells.