Watch the 98th annual National Christmas Tree Lighting Ceremony online this year. Then, until January, from dusk until 10pm stroll through the Christmas Pathway of Peace, a grove of 56 festive trees — one for each state, five territories and the District of Columbia — lining the path to the towering newly planted Colorado blue spruce. Visit the evergreens daily 10am-10pm, The Ellipse, south of the White House, free: 202-208-1631; www.thenationaltree.org.