The Wolkenstein Castle developed historically by joining various older structures together. The tower with living quarters is the oldest part of the castle dating back to the 14th century, which was preceded by fortifications of unknown appearance. The kitchen building was expanded in the 16th century by the current dominating building parts: the South and North wings with gate house. Although much hints to the once necessary fortifications, the building ensemble is now considered a residence.
The museum at Wolkenstein Castle will give the interested visitor further glimpses into the history of the building and the city.References:
The Petersberg Citadel is one of the largest extant early-modern citadels in Europe and covers the whole north-western part of the Erfurt city centre. It was built after 1665 on Petersberg hill and was in military use until 1963. It dates from a time when Erfurt was ruled by the Electors of Mainz and is a unique example of the European style of fortress construction. Beneath the citadel is an underground maze of passageways that can be visited on guided tours organised by Erfurt Tourist Office.
The citadel was originally built on the site of a medieval Benedictine Monastery and the earliest parts of the complex date from the 12th century. Erfurt has also been ruled by Sweden, Prussia, Napoleon, the German Empire, the Nazis, and post-World War II Soviet occupying forces, and it was part of the German Democratic Republic (East Germany). All of these regimes used Petersberg Citadel and had an influence on its development. The baroque fortress was in military use until 1963. Since German reunification in 1990, the citadel has undergone significant restoration and it is now open to the public as a historic site.