There's ice-skating in Rockefeller Center next to the big tree, in Central Park at Wollman's Rink and in Bryant Park at The Pond. I'm not crazy about ice-skating. Too slippery if you ask me, but I'll probably be out and about throughout the winter to watch from the sidelines since there's always tasty food and attractions nearby—especially at the one in Bryant Park!
Cartier, near Saks Fifth Avenue