Constructed in a neo-Gothic style in 1884, this Domkirke is the third-largest church in Norway, seating 1,800 worshippers. You may want to check it out, especially when there is organ practice at 11am on summer weekdays. You can climb the tower for NOK20 ($4/£2) for a panoramic view of the area. Summer concerts are also presented here, especially at the weeklong International Church Music Festival in mid-May, with organ, chamber, and gospel music on tap.