Church of St. Nicholas in Chełmża is the oldest sacred building in Chełmża. The original wooden church could have existed already in the 12th century, because in the erection act of the cathedral, along with the salary, it was subordinated to the chapter in 1248. The present church was erected in three phases from around 1264 to the beginning of the 14th century. A three-nave temple was built with a rectangular chancel and a tower from the west, embedded in the lower part of the nave. Adjacent to the chancel was the no longer existing chapel of St. Lawrence, later St. Hubert. In 1422, as a result of the Polish-Lithuanian invasion during the Golub War, the church was burnt. The vaults in the nave collapsed. During its reconstruction, the windows in the central nave were walled up. In the nineteenth century, there were further reconstructions: the tower was raised by one storey, the transept was added to the corpus, and the east presbytery gable was rebuilt.
It is a three-nave gothic church with a neo-gothic transept and a massive tower from the west. The building is made of brick in the monk bond, using fieldstone in the lower parts of the walls. The chancel is covered with a rib vault from the beginning of XIV century, while the aisles are covered with wooden beam ceilings.
Webpage wikipedia.org, Kościół św. Mikołaja w Chełmży.