A museum dedicated to Philadelphia’s most famous Founding Father is reopening this weekend after nearly two years of renovations. The 7,000-square-foot Benjamin Franklin Museum had opened in 1976 at the downtown site where Franklin’s house once stood. By 2011, many displays and exhibits were broken or dated. and the facility closed to undergo a $15 million refurbishment. The new museum features artifacts, computer animation and interactive displays. There’s also the “ghost” structure outlining Franklin’s three-story brick house, pictured here. The National Park Service is planning a grand opening celebration on Sept. 19.