The St. Laurentius Church in Windeck-Dattenfeld is also called Siegtaldom because of its double tower facade. The church is the only church with two towers in the Rhein-Sieg district.
It was built in 1879-1880 on the site of the old parish church in the neo-Romanesque style. Thirty years ago the church was extensively renovated. The vaults in the nave and transept were renewed and the masonry was strengthened.
The St. Laurentius Church was planned and executed by the Cologne architect August Lange. The Romanesque north tower was raised by a floor by Lange and closed off by a dwarf gallery in order to adapt it to the newly built south tower.
Above the main portal is a simple eight-part rose. To the north are two more side portals. What is striking is the massive choir complex, which is adjoined by a one-storey sacristy.
The St. Laurentius Church is a three-nave columned basilica with a ribbed vault. Main choir and side choirs are elevated. The baptistery is in the old Romanesque north tower, the floor of which is 16 cm lower than in the rest of the church. In the course of the new building at the end of the 19th century, a six-part fan window was let into the west wall. The high altar was designed by the Cologne sculptor Gotthilf Jaeger.
The St. Laurentius Church has housed a reconstruction of the so-called Dattenfeld Madonna since 2003. The original, one of the earliest seated Madonnas of the Gothic era, can be seen in the Kolumba Museum in Cologne.