The ruin of Madenburg Castle is one of the biggest and oldest castle complexes in Rhineland-Palatinate. The castle was built on a cliff on the outskirts of the Palatinate Forest looking towards the Rhine rift valley.
In 1076 the Madenburg castle appears for the first time in a medieval document. Not a lot is known about the early owners of the castle, the counts of Madenburg. At a certain period it belonged to the Empire and to the Hochstift of Speyer. In 1470 Count Palatine Friedrich I. and his troops conquered Madenburg. In 1525, during the Peasants’ War, the castle was seriously damaged for the first time, but later rebuilt and renovated several times. In around 1689 French troops finally destroyed Madenburg.
References:The Chapel of St. Martin is the only completely preserved Romanesque building in Vyšehrad and one of the oldest in Prague. In was built around 1100 in the eastern part of the fortified outer ward. Between 1100 and 1300, the Rotrunda was surrounded by a cemetery. The building survived the Hussite Wars and was used as the municipal prison of the Town of the Vyšehrad Hill.
During the Thirty Years’ War, it was used as gunpowder storage, from 1700 to 1750, it was renovated and reconsecrated. In 1784, the chapel was closed passed to the military management which kept using it as a warehouseand a cannon-amunition manufacturing facility. In 1841, it was meant to be demolished to give way to the construction of a new road through Vyšehrad. Eventually, only the original western entrance was walled up and replaced with a new one in the sountren side. The dilapidating Rotunda subsequently served as a shelter for the poor.