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 Great Exhibition taken from attendees in this manner. Two thousand five hundred tickets were printed for the opening day, all of which were bought. The Great Exhibition of 1851 encouraged the production of souvenirs, the Lane's Telescopic Views which provided a three-dimensional view of the Great Exhibition of 1851. These were paper souvenirs that were made of printed lithographic cards which were hand-coloured and held together by cloth to give a three-dimensional view of the Great Exhibition. These views offered a miniature view of the Crystal Palace Exhibition when one viewed the cards through the peep hole on the front cover. Visitors