The construction of a church dedicated to Saint Gallus in Süderbrook is first documented in 1299. The wooden tower was erected in 1720. The church houses several significant artifacts, including a pulpit by Ludwig Münstermann (circa 1620), a Last Judgment mural from the 15th/16th century, a confessional from the 15th century, and a roughly 800-year-old figure of Mary.

The organ in St. Gallus Church is likely the last almost completely preserved organ by the Stader master Georg Wilhelm Wilhelmy from 1794/1795. In 2007/2008, it was restored over approximately 15 months by Orgelmakerij van der Putten from the Netherlands. The organ's restoration involved carefully maintaining its original disposition and structure, making it a significant historical and musical artifact.

The original organ built by Wilhelmy had 17 registers across two manuals and a pedal. Various modifications occurred over the years: in 1861 by Johann Claussen Schmid, in 1938 by Alfred Führer, and in 1969 by Werner Bosch, each contributing to changes in the organ's configuration and mechanics. The comprehensive restoration by van der Putten aimed to return the organ to its historical state, preserving its unique characteristics and original sound.

Additionals: Manualkoppel (I/II), Pedalkoppel (I/P), Tremulant, 3 Sperrventile

https://nomine.net/orgel/altenesch-st-gallus/