VIP tour of the cheetahs at the National Zoo's Smithsonian Conservation Biology Institute (SCBI; formerly Conservation & Research Center; CRC) in Front Royal, VA. Tour by scientist Dr. Adrienne Crosier. SCBI is a 3,200-acre site in the Shenandoah Valley, where scientists and staff are engaged in multi-disciplinary research to recover endangered species, save habitat, and restore species to the wild. Tour for 4 to 6 people.