Tickets are avail­able for “Terra Cotta Warriors: Guardians of China’s First Emperor,” a trav­el­ing exhi­bi­tion fea­tur­ing the largest num­ber of terra cotta fig­ures ever to travel to the United States, on view at the National Geographic Museum from Nov. 19, 2009, through March 31, 2010. The museum will be the final venue of the exhibition’s four-city U.S. tour.