Stretch your legs and your mind during the 30th Annual Dupont Kalorama Museum Walk (June 1 and 2, 2013). June 1 10am-4pm June 2 1pm-5pm. Nine diverse museums will open their doors free of charge for this weekend long celebration in one of Washington, D.C.’s most beautiful neighborhoods.  Discover Anderson House, Dumbarton House, Fondo del…