The tower opposite the Big Ben is the Victoria Tower, built in 1860. The tower contains the records of both the House of Lords and the House of Commons since 1497. During the parliamentary year the Union Flag is hoisted on top of the 98m tall tower
The oldest part of the Houses of Parliament is Westminster Hall, dating back to 1097. The large hammer beam roof was built in the 14th century and replaced the original roof which was supported by two rows of pillars. The hall is one of Europe's largest unsupported medieval halls.