Westminster Abbey can be traced back to the 12th century where it was used as a Benedictine Monastery. The confessor's shrine, the tombs of Kings and Queens and countless memorials can be seen here. It has been the setting for each coronation since 1066, and is also used for many more Royal occasions. There is also a 900 year old garden that is definitely worth a visit. It is reached via the Abbey's Great Cloisters and offers amazing views of the Palace of Westminster.