Blue Peter's fondest memories at Television Centre in London
28 June 2011 Last updated at 13:31 BST
Children's programme Blue Peter will make its final broadcast from the BBC's Television Centre studios later.
During the show's farewell to the west London studios, there will be an attempt at a world record for the most people simultaneously hula-hooping.
David Sillito takes a look back at some of the programme's most memorable moments.