Fonmon Castle is a fortified medieval castle near the village of Fonmon in the Vale of Glamorgan. With its origins rooted in the 12th century it is today seen as a great architectural rarity, as it is one of few buildings that was drastically remodeled in the 18th century, but not Gothicized. The castle is believed to have remained under the ownership of just two families throughout its history; from Norman times, it was owned by the St Johns, and from 1656, by the descendants of Colonel Philip Jones.
Fonmon Castle is situated in extensive gardens and is constructed of local sourced stone, primarily limestone and blue lias rubble. There is one arched internal doorway which appears to be Sutton stone; but are covered in grey render which disguises much of the stonework. The roofs are of mixed slates with lead gutters and dressings.
The main building is of two and three storeys and castellated almost throughout. Apart from the south east corner tower, which is slightly higher, the walls are largely uniform in height.
In the grounds, to the south west of the house, there is an 18th-century stable which incorporates a late medieval barn. The south and east walls of the stable are castellated to impress those approaching from the south. The stable has a fine polygonal stone chimney, which is a rare surviving medieval find.
Further south is a battlemented watch tower of either 17th or 18th century design, thought to have been modeled on the one found at St Donat. It is believed the watch tower was constructed in two builds, and may have been founded on original ruined medieval stonework. Due to its time scale and features, it is assumed to have been constructed during the medievalizing improvements carried out by Robert Jones III.
Notable features inside the castle include the combined grand drawing room and library, designed by Thomas Stocking. Described by Newman as the 'glory of Fonmon', the library, running east to west is lit by two Venetian windows, a stone one to the west wall and a sashed timber oriel window to the east. The room is divided into three sections, the largest central, with square end bays with segmental arches. There are trophies of the chase in the spandrels of the arches and arabesques and wreaths adorn the flat of the ceiling with an Apollo head in a sunburst at its centre.
References:Vufflens castle was built in 1425 on the site of a previous medieval castle by Henri de Colombier. It is the most significant example of a small group of fortified Romandy castles from the middle ages, characterised above all by its brick construction. In 1530, it was set on fire by Bernese troops. In 1641 it was acquired by the de Senarclens family. The castle is currently privately owned and cannot be visited.
A pleasant 30 minute-walk through the vineyards between Vufflens-le-Château and Denens, offers a stunning view of this magnificent castle, the lake and the Mont-Blanc.