The Protestant church was built in 1910 in the Art Nouveau style, after the formerly Reformed church on Kirchstraße, dating back to 1739, had become too small and dilapidated. It is named after King Gustav II. Adolf, who entered the Thirty Years' War as a Protestant military leader of the Swedes in 1630. His likeness is depicted in a stained glass window on the west side. For four years, starting from the winter of 1631/32, the Swedes ruled over Ingelheimer Grund after they had expelled the Spanish occupation.
The construction of the church was financed by donations, with significant personal contributions from Grand Duke Ernst Ludwig of Darmstadt. The names of some benefactors can be found in the stained glass windows featuring scenes from the New Testament. The Frankfurt painter Otto Linnemann designed the interior with the colorful ornamentation of Darmstadt's Art Nouveau style. The wooden works were crafted by the local master carpenter Johann Krück. Since the restoration in 1992/93, the church interior can once again be admired in its original design.
