The Église de l′Invention de la Sainte-Croix (Church of the Discovery of the Holy Cross) is the mostly medieval parish church of the small town of Kaysersberg. The church is situated on the Romanesque Road of Alsace thanks to its ornate sandstone portal from ca. 1230-1235.
The Holy Cross Church was built in the first half of the 13th century, then expanded and modified in the 15th century, and finally partially modified again in the first half of the 19th century, when the steeple was crowned with its characteristic dome.
The church is filled with notable artworks, all of which are classified as Monuments historiques. Chief among them are the large wooden polychrome altarpiece of the Passion of Jesus, a 1518 work by the Colmar master Hans Bongart and a large triumphal cross, height 425 cm, from the late 15th century.
References:Ehrenbreitstein Fortress was built as the backbone of the regional fortification system, Festung Koblenz, by Prussia between 1817 and 1832 and guarded the middle Rhine region, an area that had been invaded by French troops repeatedly before. The fortress was never attacked.
Early fortifications at the site can be dated back to about 1000 BC. At about AD 1000 Ehrenbert erected a castle. The Archbishops of Trier expanded it with a supporting castle Burg Helferstein and guarded the Holy Tunic in it from 1657 to 1794. Successive Archbishops used the castle's strategic importance to barter between contending powers; thus in 1672 at the outset of war between France and Germany the Archbishop refused requests both from the envoys of Louis XIV and from Brandenburg's Ambassador, Christoph Caspar von Blumenthal, to permit the passage of troops across the Rhine.