December 18 and 19: Tours begin at 7:05 p.m., 7:15 p.m. and 7:25 p.m. December 20 through 23: Tours begin at 6:50 p.m., 7:05 p.m., 7:15 p.m. and 7:25 p.m. During this beloved annual event, families tour Whitehall after hours and discover the origins of American Christmas traditions. Guests will have a rare opportunity to see Whitehall by the glow of the original 1902 light fixtures. Every visitor will receive a traditional Christmas cracker following the tour. A choral group will sing carols and holiday refreshments will be served. The Museum Store will remain open for holiday shopping.