The parish church of St. Andrew in Byszwałd was erected at the beginning of the 14th century. As a result of the Polish-Teutonic wars from the beginning of the 15th century, the parish was deserted and the temple was destroyed. The Polish-Swedish wars of the 17th century brought further devastations.
The church is a small, aisleless, village temple built on a rectangular plan. It was built of erratic stones in the lower parts and brick in higher ones. The sacristy adheres to it from the south. The distinguishing feature of the building are two gothic gables decorated with blendes and pinnacles. In the corners, the building is reinforced with buttresses.