The Gielsdorf village church in Altlandsberg is a late Romanesque fieldstone building from the 13th century and is considered one of the historic churches in the Märkisch-Oderland region. It was built as a typical hall building with a nave, rectangular chancel, semicircular apse, and a west tower, which was later given a half-timbered top.
In the 15th century, the noble von Pfuel family assumed patronage of the church. Several valuable furnishings date from this period. Of particular note is a carved altar from around 1500, which was transferred to Gielsdorf from the Wilkendorf village church in 1975. It depicts the crescent-moon Madonna and figures of the apostles. The furnishings are complemented by a Renaissance pulpit from the 17th century and a gravestone for Wilhelm von Pfuel († 1608) on the north side of the church.
Extensive renovations took place between 2012 and 2014. Today, the church serves not only as a place of worship, but also as an "art church" where concerts and exhibitions are held. Thus, it has become a cultural meeting place on the historic village green.