Meysembourg Castle has a history dating back to the 12th century, but today's castle was built in 1880 in Neo-Renaissance style and is privately owned. The Meysembourg family is first mentioned in the 12th century when Dame de Meysembourg was in the service of Ermesinde, Countess of Luxembourg. Historic references show that Walter de Meysembourg was the propretor in 1176 and Eberhart de Maysembourg in 1296. In 1443, the castle was destroyed by Philip the Good but was rebuilt before 1500. It was again destroyed by Maréchal de Boufflers troops in 1683–84. All that remains of the former castle are the chapel, the moat and part of the outer wall. Custine de Wiltz, the last in line to inherit the property, fled during the French invasion in 1794. Following a public auction in 1798, the castle fell into the hands of the Lords of Fischbach, Cassal and finally Jean-François Reuter of Heddersdorf who occupied the village after expelling its inhabitants.
After buying the property in 1885, the Prince of Arenberg demolished it in 1880 and built a new castle in Neo-Renaissance style. In 1971, the State architect Charles Arendt carried out restoration work. The property now belongs to the Spiegelburg family. The castle is now privately owned and is not open to visitors.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.