The Weisman's extravagantly fanciful stainless steel facade, designed by Frank Gehry, has always been an artwork unto itself, but there are now more reasons than ever to see the art inside the museum. WAM completed a major expansion last October — also designed by Gehry — that added more than 8,000 square feet of exhibition space to the main floor. Several new galleries give the museum twice as much room to show off the 17,000 works of mostly modern American art from its permanent collection. And while that collection is a bit of a hodgepodge, it does present a great chance to see representative works from modern icons such as Robert Motherwell and Georgia O'Keeffe and lesser known but worthy American modernists like Alfred Maurer and Marsden Hartley. Two temporary exhibits are also worth seeing: "Merge," by Sharon Louden, a room-filling installation of aluminum-flashing strips screwed and glued into a flowing, undulating mass (through May 20); and "Kathe Kollwitz: Making Human," a small but moving exhibit of powerful prints of the human form from the German artist that are still shocking and heartbreaking 100 years later (through July 1).