11a.m. to 4 p.m., $5.00 per person with children 6 and under free. Join us at Ben Lomond as we commemorate the 152nd anniversary of Ben Lomond being used as a Civil War hospital. Specialized tours include medical demonstrations provided by living historians, interactions with actors portraying some of the people that were actually here, and inclusion of interactive displays. In remembrance of Ben Lomond being used as a hospital over 150 years ago, the American Red Cross will be hosting a Blood Drive on the site from 9:00 am to 2:00 pm on Saturday 20th. All who donate blood will receive a complimentary pass to see the house. Ben Lomond Historic Site, 10321 Sudley Manor Dr., Manassas, VA 20109; 703-367-7872.