Built in grand style in the 1930s, this massive art-deco complex is perhaps most famous for its annual Christmas tree-lighting ceremony and its ice-skating rink (open October-May—skates available for rental). Walking tours of Rockefeller Center's architectural treasures, with stories about the center's famous and quirky past, depart from the NBC Experience store (30 Rockefeller Plaza, on 49th Street between Fifth and Sixth avenues) on the hour Monday-Saturday 11 am-5 pm, Sunday 11 am-3 pm. US$12 adults, US$10 for seniors and children ages 6-16 (no children younger than 6). The six-level observation deck, Top of the Rock, is open 8 am-midnight (last elevator at 11 pm). US$17.50 adults, US$16 seniors, US$11.25 children ages 6-12. Fifth Avenue between 47th and 52nd streets (subway line B, D, F or V to 47th-50th Streets-Rockefeller Center; N, R or W to 49th Street), Manhattan, New York City. Phone 212-332-6868 for general information. http://www.rockefellercenter.com.