Daily, except Thanksgiving, Christmas and New Year's Day.

Visitor Center hours are 8:00 a.m. to 5:00 p.m., seven days a week. Museum hours are 9 a.m. to 5 p.m. Note: The museum is closed on Monday and Tuesday for the months of November, December, January and February.

Park (tour road) hours: Memorial Day through Labor Day, 8:00 a.m. to 9:00 p.m.; April-May and September-October, 8:00 a.m. to 7:00 p.m.; November through March, 8:00 a.m. to 5:00 p.m.