St. John's Church was probably built in the first third of the 14th century as a three-nave basilica. The church was damaged in the Russian- Livonian War in the 16th century; lightning has set its spire on fire several times. Some parts of the church were destroyed in the Great Nordic War in 1708.
In the end of 19th century external walls of St. John's Church were cleaned of limewash, the original shape of the choir windows was restored and new external figures were made of instead of the destroyed ones. The building was reconstructed in the Neo-classicism style in 1930’s. During World War II, the church caught fire. The damage was so extensive that an unknown and rich interior decoration was discovered the beneath the destroyed plaster sheet. There have been over a thousand sculptures in the internal and external walls of the construction. There is no other brick church decorated with so much terracotta plastic in Europe.
There are fifteen figures in the triple arch niches of the fronton which represent Judgement Day. On the facade and two sides of the tower there are other figures since the tower's frieze consisting of quaternion foils with a human head continuing in each quaternor foil on the sides of the longitudinal building as well. There are friezes and niches decorated with sculptures in the interior as well.
However, the western wall, with numerous niches with sculptures and pseudotriforium located above the arcades in the niches of which there are figures sitting on a throne, deserves special attention. In the eastern wall, above the triumphal arch, there is a large terracotta group: Christ on a cross and Mary and John beneath the cross.
Reference: Tartu Tourist Information
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.