the most distinguishing feature of the interior is no doubt the richly painted walls, with frescos executed by a master painter probably from prussia or bohemia. these are from the late 14th century or early 15th and depict different christian themes, like the last judgement, the crucifixion, a few of the apostles but also the mass of saint gregory and legends of saints. as for the previously mentioned depicted knights, scholars have different views of what they may depict or represent. one theory is that they are teutonic knights. another claims that they represent a depiction of the battle of visby, while others believe they are, in line with the other paintings, representing the christian theme of the martyrdom of the theban legion. a single remaining painted glass window remains, a baptismal font from the 13th century and an oddity: a mite box in stone, which is signed by the stonemason in runes, "lafrans made this stone".