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
The Crystal Palace catering for women also). During the exhibition, 827,280 visitors each paid one penny to use them. It is often suggested that the euphemism "spending a penny" originated at the Exhibition but the phrase is more likely to date from the 1890s when public lavatories, fitted with penny coin-operated locks, were first established by British local authorities. The Great Exhibition closed on 11 October 1851. The life of the Great Exhibition was limited to six months, after which something had to be done with the building. Against the wishes of Parliamentary opponents, a consortium of eight businessmen including Samuel Laing and