Newton House | Dinefwr Estate

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Historic Newton House surrounded by Natural Nature Reserve and 18th century landscape with deer park and cosy cafe.

A magical land of power and influence for more than 2,000 years, Dinefwr Park and Castle is an iconic place in the history of Wales. Two forts are evidence of a dominant Roman presence. The powerful Lord Rhys held court at Dinefwr and influenced decisions in Wales.The visionaries, George and Cecil Rice designed the superb 18th-century landscape that you see today.

The 'hands-on' Newton House gives visitors an atmospheric circa 1912 experience. Exhibitions on the first floor tell Dinefwr's story and inspire visitors to explore the castle and park.

Dinefwr Park
Dinefwr Park is one of the most illustrious places in Welsh history, a stunning 800 acre estate on the outskirts of the old farming town of Llandeilo and is a Sight of Special Scientific Interest (SSSI) and the first parkland National Nature Reserve (NNR) in Wales. The estate slopes down to the level fields forming the Tywi floodplain where small lakes on the plain edges add more beauty and interest to the landscape.

Dinefwr boasts a vast and diverse range of habitats and environment. From flower rich hay meadows to dense woodland, wide open spaces to bog woods and wet meadows. Each providing vital habitats for a range of species and playing a crucial role in Britain’s biodiversity.

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Guide Prices

2022 House Gift Aid prices (Standard in brackets)
Adult: £8.80 (£8.00)
Child: £4.40 (£4.00)
Family: £22.00 (£20.00)
1 adult, 2 children: N/A (£12.00)

Car Parking £5.00



  • Children welcome

Site Features

  • National Trust Property

Target Markets

  • Accepts groups

Map & Directions

Road Directions

SatNav: Problems, do not use. From the end of the M4, take the A483 to Llandeilo, through the town and left where signed to Dinefwr Park. From the east on the A40, south-west from Llandovery and left at roundabout for the A483 and the town; up the hill and right where signed to Dinefwr Park. From the west on the A40 from Carmarthen, turn right where signed for Llandeilo and Dinefwr Park.

Public Transport Directions

Heart of Wales Scenic Railway | Llandeilo station is 2 miles away.

Newton House | Dinefwr Estate

Type:Historic House

Dinefwr, Llandeilo, Carmarthenshire, SA19 6RT

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Call direct on:

Tel01558 824512

Opening Times

* Please see website for opening times.


  • Other AwardsNational Trust National Trust 2019
  • Regional and MiscellaneousWTTC Safe Travels WTTC Safe Travels 2022


Dinefwr Estate | Waterfowl from the Bird HideDinefwr National Nature Reserve, LlandeiloThis beautiful area of parkland has many very old trees, some of which are estimated to be over 700 years old and which support numerous interesting lichens and insects.

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