Eventually Cornerstone will have 28 to 30 gardens with each remaining one or two years. "It will be like a museum with temporary exhibits," Hougie said. Cornerstone features cutting-edge design, "the kind that may or may not be suitable for home gardens" but that will challenge people to think, he said. Intended to appeal to both gardeners and artists, "it's a place to be inspired. You won't see the ordinary."