New York Public Library, 455 5th Ave (between 40th and 42nd Sts), ☎ +1 212 340-0833, [4]. M,Th-Sa 11AM-6PM, Tu-W 11AM-7:30PM, closed Su. The main branch of the New York Public Library (officially the Stephen A. Schwarzman Building), this is the grand structure flanked by lions on both sides of the entrance. Inside you'll see impressive architecture, long hallways, and beautifully designed reading rooms. Free.