Christmas at the Seiberling Candlelight Tour Night; Seiberling Mansion; 5-8 p.m.; Tickets are $10 for adults, $5 for students 18 and under, 5 and under are free; Visit the mansion on this special evening to admire the seasonal décor during a self-guided, low-lighting tour; House lights are extinguished or lowered to provide optimal viewing of holiday lights; For tickets, visit www.howardcountymuseum.org.