Today's museums are large complex institutions, however, comprised of many departments demanding qualified employees with an art history background, though not necessarily a doctorate, for various positions. Museums have departments of education, which work with the public preparing tours, lectures, seminars, teacher information packets for public schools, and so forth. Most museums have departments of exhibition installation, while some have conservation and restoration departments. All have museum stores, many of which produce and market museum reproductions. Museum administration usually requires advanced degrees in museology and art history for top positions, but is a vast arena with many jobs at varied levels.
Art history combined with study in another field prepares students for additional career options.
Undergraduate art history majors sometimes attend law or business school, with the intention of specializing in art law or art investment. Students may combine journalism and research and writing skills to prepare themselves for positions in architectural consulting, publishing, and freelance writing. Many art history graduates pursue a career in the related field of historic preservation, concerned primarily with the preservation of the built environment. Indeed, each state maintains a historic preservation agency, such as the Illinois Historic Preservation Agency in Springfield, which among other things, reviews nominations of architecture to the National Register of Historic Places. Your questions are most welcome.