Trondenes Church today has three preserved altar triptychs in the choir section, all most probably dating from the end of the fifteenth century and made in the Hansa city of Lübeck in Northern Germany. They are exquisite works that bear witness to Trondenes Church’s unique position in this part of the country. During the fifteenth century, the priests who served the parish of South Troms lived together in a college on Trondenes. They would go out to the other churches in the district to hold masses there. Behind the altar triptychs there are three pointed-arch, Gothic windows, a so-called Trinity window. The existing stained glass windows were made by Gabriel Kielland in 1918.