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Latitude: 51.8768 / 51°52'36"N
Longitude: -4.0185 / 4°1'6"W
OS Eastings: 261149
OS Northings: 221730
OS Grid: SN611217
Mapcode National: GBR DV.RV63
Mapcode Global: VH4J3.93G2
Entry Name: Old Dynevor Castle
Listing Date: 8 July 1966
Last Amended: 24 June 1991
Source ID: 11117
Building Class: Defence
Location: Set high on a rocky, wooded ridge above Afon Tywi with exceptional, picturesque views to the castle from S over the river and from the landscaped park to N.
Traditional County: Carmarthenshire
Extensive remains of a medieval castle first built by the Welsh princes in C13; partly remodelled by King Edward I with a gatehouse added on S and a rectanuglar tower on N. Late C15 additions by Sir Rhys ap Thomas.
The masonry remains include an angular curtain wall, incorporating a circular tower to NW and a large round tower at SE angle, now surmounted by a C17(?)/C18 gazebo. Later additions include a rectangular hall facing N.
Old Dynevor Castle became a major feature in the C18 landscaped park to Newton House (now Plas Dinefwr) situated approximately one kilometre to N.
Scheduled Ancient Monument: Cm29.
Other nearby listed buildings