Hohnstein Castle is located on a hard sandstone slab, 140 metres above the Polenz valley and is the major landmark of the small town. It was probably built around 1200 or earlier as a Bohemian border fortress for the Margravate of Meißen to defend it against Saxony. In 1353 the castle went into the possession of the Bohemian nobleman, Hynek Berka z Dubé, whose coat of arms with crossed oak branches decorates the entranceway to the second courtyard. In 1443 the Berkas of Dubá lost the estate through exchanges and purchase, only mentioned for the first time under their name, to the Electorate of Saxony under Frederick the Humble, although it remained a Bohemian fief until 1806. The Wettins used it as a base for hunting and for salmon spearing (Lachsstechen).
In the succeeding centuries the castle acted alternately as a seat of administration (electoral Amt), a court and a prison. The original wooden structures were gradually replaced during the 17th and 18th centuries by the present stone buildings and even successfully withstood a Swedish siege in 1639.
After the dissolution of the Amt in 1861 the castle served as a men's correctional institute (Männerkorrektionsanstalt) and from 1919 as a juvenile prison.
In 1925 the mighty castle became a youth hostel. In the years 1933/34 a concentration camp was established here for so-called protective custody prisoners (Schutzhäftlinge), in practice 5,600 political prisoners. During World War II a prisoner of war camp was housed in the castle and, after the war it was a refuge for displaced persons. From 1949 it was extended to become the largest youth hostel in the GDR. In 1953 the National Science Museum for Geology, Botany, Zoology and Ecology of the countryside was established here. In 1997 the castle was turned into a Friends of Nature house and youth guest house, to which the museum belongs today.
References:The Temple of Edfu is one of the best preserved ancient shrines in Egypt. It was built in the Ptolemaic Kingdom between 237 and 57 BC.
Edfu was one of several temples built during the Ptolemaic Kingdom, including the Dendera Temple complex, Esna, the Temple of Kom Ombo, and Philae. Its size reflects the relative prosperity of the time. The present temple initially consisted of a pillared hall, two transverse halls, and a barque sanctuary surrounded by chapels. The building was started during the reign of Ptolemy III Euergetes and completed in 57 BC under Ptolemy XII Auletes. It was built on the site of an earlier, smaller temple also dedicated to Horus, although the previous structure was oriented east–west rather than north–south as in the present site.