Art history is a complex field that studies visual art and culture through examining different art forms, their relationship to reality, and the combination of artistic works' form and content. It includes the theory, history, and criticism of art. Art history education can lead to careers in secondary education, research, cultural education, expert analysis, and organizational management in places like museums, research institutes, galleries, and government organizations. Successful work in art history requires research interests, good memory, attention to detail, analytical abilities, and artistic taste. Some influential early art historians included Giorgio Vasari, Johann Joachim Winckelmann, Gotthold Ephraim Lessing, and Denis Diderot.