St. Martin Church is located at a crossing point of the Way of St. James. Its construction started in the 16th century. It contains an 18th-century wooden statue of St. James in pilgrim clothing, an 18th-century statue of the Assumption of Mary, an 18th-century altarpiece and a 15th-century processional cross. The arms of this cross are garnished with small bells. During a witch trial in 1609, this cross was considered as a diabolical object by Councillor Pierre de Lancre.
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.