Chicago’s Art Institute is renovating galleries. But instead of packing away some of its most important paintings, it will loan them to Fort Worth’s Kimbell Museum. “All the pieces — which range from 26 Claude Monets and 12 Renoirs to seven Paul Gauguins, seven Paul Cezannes and six works by Edgar Degas — previously had been loaned to other institutions. But never before have so many works central to the museum’s most famous collection (several from the institute’s earliest and largest bequests) left the museum at once.”