<human>: What are some of the best places to go in the winter in the United States?
<bot>: Some of the best places to go in the winter in the United States include skiing and snowboarding at resorts like Aspen Snowmass, Vail, and Breckenridge; ice skating at Rockefeller Center in New York City; visiting the National Christmas Tree in Washington, D.C.; touring the White House during the holiday season; and exploring the lights of Times Square in New York City.