Blue Peter is a popular, long-running BBC television programme for children. It is named after the blue-and-white flag hoisted by ships in port when they are ready to sail. The presenters maintain the famous Blue Peter Garden, adjacent to Television Centre, which was originally designed by gardener Percy Thrower and was unveiled on the show on 21 March, 1974. Its features include an Italian sunken garden with a pond, which contains goldfish, a vegetable patch, greenhouse and viewing platform. The 2000 Blue Peter time capsule, which is due to be dug up in 2029, is buried there. George the Tortoise was interred in the garden following his death in 2004, and there are also a bust of Petra, sculptures of Mabel and the Blue Peter ship, and a plaque in honour of Percy Thrower. In 1984, the garden was vandalised, leading to an on-air appeal for viewers to come forward with information.