Mini golf at the Walker?! The 2013 15-hole course will open May 23 with hole number 8 designed by studio art professors David Lefkowitz and Stephen Mohring. Here is their proposal for 18 Holes in One: Collapsing the Masters Narrative and pictures of the finished object. The topography is a manifestation of all 18 holes of the legendary greens at Augusta National laid over the other. The exhibition Walker on the Green: Artist-Designed Mini Golf is opening is May 23, 5-10 pm at the Minneapolis Sculpture Garden, Walker Art Center and is up through September 8th.