The Castle towers above the small town of Krupka and is accessible by road. Repairs are currently taking place at the castle. At the beginning of the 19th century, the castle was known by the name of Rosenburg - the Pink Chateau – referring to the roses that used to grow here. Both the castle and the town of Krupka owe their origin to tin mining in the surrounding Ore Mountains. The time of their formation is not entirely clear. A letter written by King Wenceslas II. in 1305 speaks only of a place or a mountain - the upper village called Krupá, where tin was being mined. It seems very likely that the castle and the town did not exist at that time, because the locality would not have been determined by such a vague expression. The introduction of tin mining in the Krupka region is also shrouded in mystery, although on the basis of Wenceslas' letter it can be deduced that the mining boom occurred at the end of the 13th century. The name of “Krupa”, Krupka, is not associated with tin, as some elder historians thought, but is derived from the Czech word “krupý”, which means rough and large. However, it was mainly miners from the neighbouring parts of Germany that started to settle in Krupka after the introduction of tin mining. In the aforementioned Wenceslas´s letter from 1305, Zvěst of Trmice was confirmed as the legitimate owner of Krupka, which had been previously donated by mistake to the Cistercian Abbey of Zbraslav by King Wenceslas II.