Q:The Memory Cathedral -  The Memory Cathedral: A Secret History of Leonardo da Vinci is a 1995 historical fantasy fiction novel by Jack Dann. It follows Leonardo da Vinci constructing his flying machine and then travelling to the East. Given a choice of categories company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work, the text refers to which one?
A:
Written Work