This magnificent Gothic cathedral, the Hohe Domkirche St. Petrus (High Cathedral of St. Peter) was built between 1248 to 1473, though unfinished.
It was finally completed in 1880. It is the largest Gothic church in Northern Europe, and it has the largest façade of any church in the world.
(It is also too large to photograph without distortion, even with a 12mm focal length!)