The church Nicholas in Siedlecin comes from the fourteenth century. It is a stone, one-nave temple. Among the equipment preserved include mystical crucifix with a life-size figure of Christ, baroque polychrome and gilded high altar, organ prospectus, statues of saints, wooden doors, family coats of arms.
The first mention of the church of St. Nicholas in Siedlecin comes from 1399. But the exact date of its construction is unknown. The temple has been rebuilt several times in its history. First time at the beginning of the 16th century. Further reconstruction took place in the 16th and 17th centuries. In 1700 a northern chapel and a tower helmet were added. However, in the 20th century, the southern vestibule of the church was created.
The crucifix was probably made around 1500 in a local workshop. The Baroque main altar dates from 1696. However, the performance of the organ prospectus along with the painted balustrade is dated to the end of the 18th century.