St. Florian, Romanesque church in Schortens, Germany

St. Florian Church in Sillenstede is a granite block church 44 metres long, 13 metres wide, with 11-metre walls and a round apse at the east end. Its shell construction uses split boulders with flat faces outward and rounded sides inward, creating 1.40-metre-thick walls; some stones reach 1.70 metres in length. The west gable was rebuilt in brick.

Built in the 12th century on elevated ground, the church suffered damage during a regional conflict and was later restored. Reconsecration happened in 1233, marking a turning point in its standing.

The church is dedicated to St. Florian, invoked against water and fire. On the roof stands a swan instead of a weathercock, a symbol found on Lutheran churches in northwest Germany. The free-standing bell tower holds three bells; the oldest, cast in 1440 by Ghert Klinghe of Bremen, shows Mary with the Christ Child on one side and St. Florian on the other.

The church stands on a raised warft, with the free-standing bell tower to its south. The organ concert series runs from early June to mid-September, with a concert every Saturday. Twelve of the organ's 21 stops are original to the 1757 instrument.

The free-standing bell tower south of the church reuses granite, brick and tuff from an earlier building on the site. Of its three bells, the oldest was cast in 1440 by Bremen founder Ghert Klinghe; it shows Mary with the Christ Child on one side and St. Florian on the other. The remaining two were cast in 1957.