The Felsenkirche, a church built into a natural niche in the rocks, rises high above the houses of Oberstein. Wyrich IV of Daun-Oberstein had it constructed in the years 1482-1484. Behind it, a wall of rocks rises steeply upwards; and under it, the houses of Oberstein nestle into the slope. On account of its prominent location, the church has become a symbol of the city. It can be entered only through a tunnel which was dug into the rocks.
The church’s greatest treasure is the medieval winged altar. It was created around 1400 by an unknown painter, the “Master of the Mainz Mocking”.
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.