Dinefwr is a historic site located in Carmarthenshire, Wales. It features a castle, which dates back to the 12th century, and is set within a beautiful parkland that is part of the Dinefwr Park and Castle National Nature Reserve. The site is known for its stunning views and rich history, making it a popular destination for visitors. The castle was once the seat of the Lordship of Dinefwr and played a significant role in the history of Wales. Today, it is managed by Cadw, the Welsh Government's historic environment service, and offers guided tours, educational programs, and various events throughout the year.