Chapel of St. Gertrude was erected outside the city walls in the years 1382-1383. It was founded by the town council with the consent of the Cistercian monastery. Initially, it served as a hospital chapel and then a cemetery chapel, located outside the town walls. In 1534, it became the property of the evangelical church. In 1735, the chapel was turned into ammunition depot, which was accompanied by dismantling the tower and bricking up the window openings. It began to perform sacred functions at the beginning of the 20th century. At that time, its original appearance was also restored. It is one of the three preserved chapels in Central Pomerania referring to the Temple of the Holy Sepulcher.
The chapel has clear traces of the influence of Scandinavian architecture. The octagonal structure is covered by a vault in the shape of a isosceles star. The walls of the chapel are separated by pointed windows with tracery and two stepped, entry portals. The chapel is supported in the corners by eight buttresses, passing in the top part in pilasters. In the upper part of façade, separated from the plinth by cornice, over the entrances, there are blendes decorated with rosettes. Under the eaves, the chapel is decorated with a decorative frieze made of four-leafed clover bricks. The eastern section of the façade has been erected in a projection, whereas the interior of this part corresponds to the altar niche. The interior walls were also divided in two zones: semi-circular niches were placed in the lower part, and in the upper, slightly retracted, windows. The stellar vault, supported on the ancillary columns flowing down to the floor, is covered from outside by a pyramidal top with a pointed spire.
Chapel of St. Gertrude, as one of the three preserved in the area of gothic cemetery chapels (next to Słupsk and Darłowo) belongs to the most valuable gothic monuments in Western Pomerania. Despite the small size and simplicity of the plan, it presents high quality of design and workmanship.
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Pilch J., Kowalski S., Leksykon zabytków Pomorza Zachodniego i ziemi lubuskiej, Warszawa 2012.
Webpage encyklopedia.szczecin.pl, Kaplica św. Gertrudy (Koszalin).