Gardyne Castle was built by the Gardyne family, and an inscribed stone records the date 1568. The date stone also bears the arms of King James VI and the motto 'God save the King'. Together with the distinctive style of some of the architectural features, such as the conical-roofed bartizans, this suggests an attempt to link the building with Royal Stewart architecture, and with the new king, as opposed to his predecessor the deposed Mary, Queen of Scots.
The Gardynes held a long-running feud with the Guthries of nearby Guthrie Castle, leading the Crown to confiscate the lands of both families in 1632. The Gardynes subsequently moved to a nearby residence, and Gardyne Castle became the property of the Lyell family of Dysart.
A large extension was added in 1740, which forms the central part of the current building. A further addition was made in 1910 when Harold Tarbolton was the architect. The building was renovated in the early 21st century.
The castle was remodelled and modernised (adding electricity) in 1910 by the Edinburgh architect Harold Tarbolton.
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.