chapel walls to lean. During comprehensive renovation work, started in 2000, the structure was stabilized for the long term. References Literature Die Kunstdenkmäler des Königreichs Bayern, III, 15, Bezirksamt Ebern, S. 17–24 (München, 1916). Joachim Zeune: Burgen im Eberner Land. Ebern 2003, Eberner Heimatblätter, 2 Hefte. Joachim Zeune: Burgruine Altenstein. Regensburg 2003. Isolde Maierhöfer: Ebern (Historischer Atlas von Bayern, Teil Franken, Heft 15). München, 1964. External links Altenstein at the website of the Haus der Bayerischen Geschichte Castles in Bavaria Ruined castles in Germany Buildings and structures in Haßberge (district)