Watch some famous Blue Peter moments
The Blue Peter team are broadcasting their last show from London's BBC Television Centre later.
And during the show, there will be an attempt at a world record for the most people hula-hooping at the same time!
Blue Peter is the longest-running children's programme in the world, after first being broadcast in 1958.
Don't worry though, after the programme's summer break, Blue Peter will be broadcast from Salford, Greater Manchester.
And the Blue Peter garden's not being forgotten - a new one is being created on a studio roof at the new complex.
The move is part of the relocation of several BBC departments - including Newsround.