Dinefwr is a fascinating house and museum. Run by the National Trust, this comprises the historic Newton House surrounded by a National Nature Reserve and 18th century landscape Deer Park.
It's simple to reach Dinefwr, in Llandeilo, by train. Simply hop on a train to Llandeilo station and then it's not very far - but it is a 27 minute walk away.
For more visitor info including opening times, visit Dinefwr’s website.