Museums rarely allow their most beloved works to travel. But Omaha's Joslyn Art Museum is under renovation. An opportunity arose. Now through May 28, Philbrook presents 500 years of European treasures from that acclaimed collection. Featuring paintings by the likes of Rembrandt, Monet, El Greco, Titian, and Renoir, there's no shortage of star power. Philbrook Curator Susan Green tells us all about it.