This organization is in the midst of a project to build a landmark museum dedicated to the history and contributions of Jews in the U.S. throughout the last 350 years. The five-story, glass-and-stone building will house interactive galleries and exhibition halls, a state-of-the-art resource center, and an auditorium for films, lectures and performances. It is set to open in 2010. The museum's temporary housing is open Monday-Thursday 10 am-5 pm, Friday 10 am-3 pm, Sunday noon-5 pm. US$4 adults, US$3 children. 55 N. Fifth St. (at Market Street), Philadelphia. Phone 215-923-3811. http://www.nmajh.org.