Weekly: Mondays, Tuesdays and Saturdays, 9:30 a.m. to 1:30 p.m.
On-call: Thursdays, 9:30 a.m. to 5:30 p.m.; Fridays, 9:30 a.m. to 1:30 p.m.
Sunday openings: first Sundays in March, April and May, and second Sunday in September, 10:00 a.m. to 6:00 p.m.
Guided tours: all year, upon reservation, for groups and schools.
Closed the whole month of August.