With its brick-gothic architecture and high steeple, St. Jakobi fits in perfectly with the other major churches in Lübeck. This steeple, however, also makes the church somewhat different: four large copper balls and a baroque bulge at the base give it a unique appearance. Presumably, St. Jakobi arose about 1276 from the reconstruction of an older Roman basilica. It was meant to get two impressive steeples like St. Mary's, but it seems funding became a serious problem - the double-belfries reached a height of 5 metres and were then finished as a single steeple. This obviously wasn't a sign of quality - in 1627, the Gothic steeple and bell chamber had to be torn down because they were dilapidated. A stylish baroque roof was planned for the reconstruction, but it would have ruined the skyline. A compromise was reached - a high Gothic roof with a baroque base. The four small corner towers of St. Peter's were considered lovely, but since mere imitation was not desirable, the belfry was decorated with four copper balls.
St. Jakobi remained undamaged during World War II, so the complete interior from six centuries ago gives an impression of Lübeck's churches in the olden days. The bronze font (1466) and the late Gothic Brömbse Altar (1502) are particularly spectacular. The two organs from 1466 and 1504 are very special treasures, and are still played today in concerts and during service.