The Center for Maine Contemporary Art in Rockland has unveiled its new, 11,500-square-foot building. The structure, designed by the Japanese architect Toshiko Mori, features 5,500 square feet of exhibition space, a central courtyard, and walls of glass. This is the first permanent home for the sixty-three-year-old institution, which is located within walking distance from the Farnsworth Art Museum and the Wyeth Center.