The Barbarakirche, as the second oldest of the currently preserved church buildings, was constructed in the year 1265/66 as a new building outside the settlement core, on the alluvial plains of the Rhine. During the expansion of the city wall in 1384/85 by the Counts of Katzenelnbogen, its northern wall was integrated into the city wall. The tower, built as the northwestern corner tower of the city wall, was used as a church tower.
Originally Catholic, the parish church was dedicated to Saint Barbara.
From 1526 to 1528, Landgrave Philip of Hesse introduced the Reformation in his territory, which included Braubach, and the church became Protestant.
After the completion of Markus church in 1901, there were plans to convert the Barbarakirche into a community center, but financial resources were lacking. It was not until 1928 that it was converted into a community hall and has since been used by the church congregation. 
A renovation took place from 1967 to 1970 under the direction of architect E. Thomas.  In 2017, due to damages to the tower, as well as to the tower roof, the roof of the nave, and the beams, further construction measures became necessary, which have since been completed.
The Barbarakirche is used as a winter church between Christmas and Easter. The church choir, the brass choir, as well as some working groups use it year-round. Civil wedding ceremonies also occasionally take place there. The church is opened by the Archive open Kirche on Saturdays and Sundays according to schedule from the weekend after Easter until the last Sunday in October.

Further information at: https://evangelisch-braubach.ekhn.de/wo/barbarakirche