An operating cathedral, this church is open daily for services, performances, and general visitation. Visitors are welcome 8 a.m. to 2 p.m. in winter months every day but Sunday, which is 1 p.m. to 5 p.m., and until 7 p.m. every day in the summer months. Visits are free and guests can tour the crypt, the museum and the chapter and learn about the history of the museum.