Finding quality, peer-reviewed, open access journals in the humanities is still something of a challenge. However, Nineteenth-Century Art Worldwide , which has appeared twice a year since 2002, is a shining example of the possibilities of the online medium.
The journal describes itself as "the world's first scholarly, refereed e-journal devoted to the study of nineteenth-century painting, sculpture, graphic arts, photography, architecture, and decorative arts across the globe. Open to various historical and theoretical approaches, the editors welcome contributions that reach across national boundaries and illuminate intercultural contact zones."
It should be noted that the University of Minnesota's Gabriel P. Weisberg is part of the editorial board, serving as the reviews editor.
Check this journal out for stimulating discussions of visual culture in the long 19th century!