Dating back to the 15th century, St. Mary’s Church was built on unstable ground. This is most likely the reason for its distinctive shape, which cuts off abruptly, giving it the appearance of being unfinished. If continued, further construction would lead to the collapse of the entire structure. Hence the architects chose to make the building shorter. In the 19th century, the church fell into ruin. It was saved by two figures: Duke Frederick Wilhelm IV and Primate Leon Przyłuski. Known as a “romantic on a throne”, the Duke adored gothic architecture. He prohibited the demolition of the church and provided funds for its restoration. For Bishop Przyłuski, this was one of the few surviving “ancient” Cathedral Island buildings closely tied to Poland’s history. Thanks to the efforts of these two figures, the church can be admired to this day.