On the occasion of its 70th anniversary, the Ballet Nacional de Cuba tours the U.S. this spring with the resolute Cuban prima ballerina assoluta Alicia Alonso a the helm. Named a National Hero of Labor in Cuba, Alonso, 97, has weathered strained international relations and devastating fiscal challenges to have BNC emerge as a world-class dance company. Her dancers are some of ballet's best. On offer this time are Alonso's Giselle and Don Quixote. The profoundly Cuban company performs in Chicago May 18–20, Tampa May 23, Washington, D.C., May 29–June 3 and Saratoga, New York June 6–8.