Crystal Palace Dinosaurs listed buildings from 1973, extensively restored in 2002, and upgraded to Grade I listed in 2007. The models represent fifteen genera of extinct animals, not all dinosaurs. They are from a wide range of geological ages, and include true dinosaurs, ichthyosaurs, and plesiosaurs mainly from the Mesozoic era, and some mammals from the more recent Cenozoic era. Following the closure of the Great Exhibition in October 1851, Joseph Paxton's Crystal Palace was bought and moved to Penge Place atop Sydenham Hill, South London by the newly formed Crystal Palace Company. The grounds that surrounded it were then extensively renovated and
Crystal Palace, London district a landmark location visible from many parts of London. The towers may appear similar in height and design, but the Crystal Palace mast, constructed in 1956, stands on a slightly higher elevation. The current Croydon tower was built in 1962. Crystal Palace Park is a large Victorian pleasure ground occupying much of the land within Crystal Palace and is one of the major London public parks. The park was maintained by the LCC and later the GLC, but with the abolition of the GLC in 1986, control of the entire park was given to the London Borough of Bromley.