Teutonic Knights conquered the Ełk area in 1283. They built first a wooden castle to the site of former Old Prussian settlement and the town grew around it. It was first documented in 1398. The brick castle was built in 1497. In 1888 the castle was rebuilt - it became a prison and had that function until 1976. In 1958 during renovation of part of ther castle, under its walls, there was a collapsed tunnel found. After 1985 the castle doesn't have nor any function neither conservation care.
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.