Built between the 1st and 2nd centuries AD, The Roman Amphitheatre of Venosa was deprived of many works and ornaments, which are currently located in other monuments in Venosa (many were used to erect the adjacent incomplete church). The first excavation was commissioned in the 19th century, where a series of bronzes, coins, and terracottas were found, but due to neglect, the ruins were buried again. Only in 1935 was everything brought back to light.
The Roman Amphitheater has an elliptical shape, with three levels, partly built above ground and partly created by terracing the ground on which it stands. The major axis measures 70 meters, while the minor axis is 40 meters. Based on these measurements, it is believed that this structure could accommodate approximately ten thousand spectators in its time. The lowest level is that of the arena, where the terrace of the 'podium' for important figures is located. There are two additional levels, supported by three concentric ambulatories.
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.