The Oxford Museum of Science History is located in an ancient building completed in 1683 and is the site of the Ashmore Museum, which was founded in 1924 and has a dual mission, both for the study of scientific history and for the development of Western culture and collections. The museum is divided into three floors and is attached to a library on the history of science. The collection contains tens of thousands of pieces from ancient times to the beginning of the twentieth century, covering almost all aspects of the history of science, especially astronomy, such as the collection of astroscopes, sundials, quadrant instruments, and early mathematical tools, optical instruments, and chemistry. The collection of natural philosophy and medical-related devices is impressive.