Widely considered to be one of the crowning achievements of the Enlightenment, the Encyclopedia edited by Denis Diderot and Jean le Rond d'Alembert in the 18th century has proved to be fertile ground for those who have sought to classify and chronicle the various branches of knowledge. This highly ambitious project was published during the period 1751 to 1777, and included 32 volumes amply illustrated with engraved plates. Close to 150 years later, a group of talented individuals sought to create an online version of the Encyclopedia translated into English, with links to the original French versions. The project is based at the University of Michigan Library, although contributors to the project are scattered across the world. Visitors to the site can search the currently available articles or browse by title, French title, or subject. Finally, visitors will want to take a look at the famous "Map of the System of Human Knowledge" that is immediately identified with this most celebrated human endeavor.