Free. Guided tour $3; free (Sun.).
Visitor center open Mon.-Sat. 9-4. Masses are open to the public Mon.-Fri. at 7 a.m. (also Wed. at noon), Sat. at 8 and 4:30, Sun. at 8, 10 and noon. Guided tours depart Sun. after the 10 a.m. mass. or by appointment. Closed major holidays. Allow 30 minutes minimum.