It is presumed that the Battenberg castle was constructed by Count Frederick III of Leiningen (d. 1287), and it remained a possession of the House of Leiningen - until 1689, when it was destroyed during the War of the Palatine Succession by French troops. Together with Neuleiningen Castle, on the opposite hillside 1,400 metres to the north, it controlled access to the Eckbach valley.
On three sides the outer walls of the castle follow the edge of the steep-sided hill spur. The wall on the fourth side was protected by a moat, now completely filled in. Surviving structures include: the outer walls, a gate tower on the western side near the northwest corner of the site, a battery tower with embrasure in the centre of the south side, and the vaulted cellar and foundations of a large dwelling. Attached to this is a staircase tower, erected in the 16th century, which is still standing.
The ruins are in private ownership but there is limited public access.
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.