St. Margaret's Church in Patzig was erected in 1381, but nothing is left of that original structure. The current church is a single-nave church, to which a wide, rib-vaulted parish hall was added later on. The granite font (c.1250) is probably a remnant of the original structure and possibly the oldest baptismal font in Rügen. The memorial slab for Peter von Patzig (†1339) has a carved drawing that shows the clergyman with a chalice and wafer. The pulpit and organ gallery were built in the 17th century. Patron's boxes and memorial slabs indicate the close relationship with the estates of aristocratic families in the parish of Patzig.
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.