Daily 7-7, Apr.-Oct.; 7-6, rest of year. Guided 1-hour tours depart Mon.-Sat. on the hour 9-11 and 1-3, Sun. on the half-hour 1:30-3:30; no tours given Thanksgiving and Christmas. Guest artists give organ recitals Sun. at 6 p.m., July-Aug., preceded by a carillon recital at 5:30 on the 56-bell carillon in Knights' Tower. Free audio tours are offered in English, Spanish and Mandarin.