The Protestant church of Nieder-Saulheim was built between 1885 and 1886, after the previous building collapsed about 50 years earlier. It is a neo-Gothic hall with a transept and a recessed, vaulted choir. The comparatively tall, gable-crowned west tower has a square base and culminates in a classic helmet roof. Above the nave and the transept, wooden ribbed vaults rest on thin cast iron columns, while the extended side aisles feature transverse vaults and suspended galleries. Particularly worth seeing is a Gothic font from the 13th century, a Gothic pulpit from the 15th century, and a Rococo organ from 1728. In the circular window, visitors will find modern stained glass, and the church benches are adorned with Baroque carvings.
The Protestant church of Nieder-Saulheim was built from yellow sandstone. The roof of the church nave and the tower roof are covered with slate.

