St Martin de la Bellouse dates from around 1225 with the centrally situated tower (similar to the one at the Forest Church), nave and chancel completed by 1250. The South porch was added around 1520 and until 1869, was the meeting place of the Douzaine. The church sits on an ancient holy site in attractive surroundings.
The church is well known for the female menhir stone figure (dating back to 2500 - 1800 BC) La Gran' Mere du Cimquiere which guards the entrance to the cemetery. In prehistoric times, the statue would have been idolised and in the 1700's it became the focus of witchcraft. Even in the 19th century this activity is thought to have continued and a church warden his reported to have split the stone, but locals later repaired it. Today some folk still place coins on her head or flowers around her neck for good luck. The Church has the only font in the island which dates from before the Reformation.
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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.