While not an “open curriculum,” the Brown-RISD Dual Degree 5- year BFA+BA program offers students a lot of flexibility:
http://risd.brown.edu/faq/index.html
https://www.brown.edu/academics/college/degree/brown-risd-dual-degree
"2. What kinds of students would be attracted to the Brown|RISD Dual Degree program?
Students interested in combining film and video with screen or playwriting, photography with anthropology or urban studies, sculpture with music or performance, art and design with the sciences, theater with glass, and many other unique combinations. RISD and Brown offer different but complementary strengths: RISD offers intensive, specialized education in all categories of the arts and design; Brown offers comprehensive concentrations in the humanities, social sciences, physical, and life sciences. There are many possibilities – and some have yet to be explored!
Please note that not all combinations of majors at RISD and Brown may be possible because of the rigorous demands of the Dual Degree program. Currently, Dual Degree students are unable to declare a major in Architecture at RISD."