(5-Adult) One of the top-rated pan-Celtic groups in the world treats its audience to high-energy entertainment featuring Scottish fiddling, percussion and vocals. Optional house tour included after your concert. Refreshments served in the 18th century kitchen. Limited seating. The program at Sully Historic Site runs from 1 to 2 p.m. and again from 2:15 to 3:15 p.m. The cost is $15 per person. For more information, call 703-437-1794.