Fonmon is one of few medieval castles which are still lived in as a home. Since it was built by the St. John family c1200, it has only changed hands once.

The varied styles of architecture, collections of books, paintings and furniture all tell of its long and distinguished place in Welsh history.

A visit to Fonmon gives unique insight into the different styles of living which have emerged and overlapped as the centuries have passed.

See the small stone ceiling from the 13th-century; portraits and paintings dating from the 16th-century onward; the 17th-century Old Kitchen; the 18th-century gilt; plasterwork Library and mementoes of the 20th-century.

Before or after your tour, enjoy a stroll around the beautiful gardens to see trees from the 19th-century, the walled gardens and watch tower and flower boarders planted by generations of the Boothby family.


April to September: Tuesdays and Wednesdays.

Castle: guided tours only, at 2pm, 3pm and 4pm.

Gardens and grounds: noon to 5pm (last admission 4pm).

Find Us
Find us

Located in South Wales just 35 minutes from Cardiff and the M4. Near Cardiff Airport, off B4265 towards Llantwit Major.



Car park on site

  • Free


A2B Cars 01446 747 500


Historic Houses members visit for free.

Visit is by guided tours only for the castle itself on Tuesdays and Wednesdays at 2pm, 3pm and 4pm. The tour lasts approximately 45 minutes and there is a charge of £6 per person for all over the age of 14.

The gardens and grounds are open free of charge and visitors are free to wander from 12 noon to 5pm (last entrance at 4pm)

  • Wheelchair ramps/routes
  • Access statement available
  • Accessible toilets
  • Guide dogs welcome
  • Accessible parking
Group Visits
Group Visits

For groups of 20 or more, Serina our wonderfully experienced and entertaining tour guide will take you around the Castle on a 45 minute journey through its fascinating history.

Because each group is individual, you can stop for questions, discussion and spend longer on areas that are of special interest.

Find out more on our website.

A word from the owner

Gardening is a family affair. My eldest sister Penelope was responsible for the creation of the small walled garden and my sister Caroline is a garden designer and is responsible for the overall layout. I myself am also a keen gardener. My daughter Aliki and husband Riaz are all used as free labour, even 3 year old Aian helps!
Sir Brooke Boothby

Fun Facts
  • Fonmon Castle is one of the very few houses that has been continuously occupied as a home since it was built in approximately 1180. Although it has only changed hand once in almost 800 years, the adaptations that have been made as the generations have passed make it virtually unique in style.
  • Colonel Philip Jones who created the old kitchen in the 1650's was a highly influential member of Parliament and close ally of Oliver Cromwell. Then Robert Jones III an extravagant art lover opened up what was a rather gloomy fortified medieval castle and turned it into a distinguished Georgian gentleman's residence filled with fine china, beautiful paintings and rare books.

A wedding at Fonmon


A fairytale wedding in a Castle to call your own! A Castle wedding doesn't get much more authentic than at Fonmon Castle, with exclusive use of a stunning building dating from the 12th-century full of historic treasures.

All weddings offer exclusive use of the Castle and the extensive gardens for the whole day, giving many opportunities for memorable moments and wonderful photos.

The Castle with its stunning high ceilinged rooms including the delicate and light filled Library and the dramatic galleried Hall can be used alone or with a marquee for larger celebrations.

The huge lawns in front of the castle can provide large spaces for outdoor drinks receptions and that all important group photograph. Both lawns have direct access to the house and / or a marquee.

Fonmon is licensed for wedding ceremonies and caters for all style of receptions. The Library is licensed for civil ceremonies and can then accommodate up to 80 people for seated wedding breakfasts, more can be accommodated using a marquee. Up to 160 can be welcomed for evening receptions with buffets suppers. Each event is uniquely tailored. 


  • Suppliers list
  • Accessible parking
  • Wedding planner
  • In-house catering
  • Guest parking

Corporate Hire

Corporate events

Fonmon is the perfect place to bring your team or your customers, whether to encourage creative thinking, land new ideas or celebrate success.

Ample free parking, a wide choice of refreshments, complimentary WiFi and a dedicated Event Manager mean that your day will always run smoothly and be a memorable one.

With a range of beautiful rooms, two and a half acres of stunning gardens and large outdoor areas, we can offer a platform for everything you’ll need.

For larger events, two interconnected fields spread over 70 acres (30 hectares) are available to hire separately or together.

A few examples of events we have hosted include:

  • Outdoor activity team building days
  • Corporate family days in the garden and marquee
  • Product launches and exhibitions
  • Meetings and small conferences
  • Champagne receptions and fine dining


  • Wifi
  • Wheelchair accessible
  • Accessible toilets
  • Team building activities
  • Projector and screen
  • Breakfast
  • Lunch
  • Plentiful parking
  • Dinner
  • Refreshments

Just being in this beautiful, historic setting is guaranteed to enthuse and inspire any visiting group.

School Visits

We offer free visits for local schools by prior arrangement.