Dinefwr Estate is a historic site located in Carmarthenshire, Wales. It encompasses a beautiful landscape of parkland, woodlands, and gardens, along with the impressive Dinefwr Castle, which dates back to the 12th century. The estate is known for its rich biodiversity and is home to various wildlife species. The estate is managed by National Trust and offers visitors a chance to explore its scenic walking trails and learn about its history. The Newton House, a Georgian mansion within the estate, showcases period furnishings and provides insights into the lives of its former inhabitants.