This paper describes the Perseus Project, an undertaking begun in the Classics Department of Harvard University devoted to the creation of a massive interactive hypermedia product on ancient Greek culture. The project is discussed in terms of its importance; contents; funding; development; delivery systems; future releases; costs; user acceptance and reaction; examples of the user interface; project evaluation; and mechanical advantage. A list of design recommendations for improving the Perseus interface is also included. (Contains 24 references.) (AEF)