A very significant Netherlandish painter towards the end of the period was Hieronymus Bosch, who employed the type of fanciful forms that were often utilized to decorate borders and letters in illuminated manuscripts, combining plant and animal forms with architectonic ones. When taken from the context of the illumination and peopled with humans, these forms give Bosch's paintings a surreal quality which have no parallel in the work of any other Renaissance painter. His masterpiece is the triptych "The Garden of Earthly Delights".