id: sig-20260722-report-gm039
site_id: gb-neath-neath
attribute: designation_report
value: 'Reference Number

  GM039

  Name

  Neath Castle

  Date of Designation

  Status

  Designated

  Unitary Authority

  Neath Port Talbot

  Community

  Neath

  Easting

  275364

  Northing

  197801

  Broad Class

  Defence

  Site Type

  Castle

  Period

  Medieval

  The monument consists of the remains of a castle dating to the medieval period. Neath Castle
  was one of the minor Norman castles in the lordship of Glamorgan. The Normans chose this
  strategic spot, guarding the river crossing, for a stronghold. The main surviving feature
  of the castle is the great twin-towered gatehouse on its west side. This belongs to the
  latest phase in its 250 year history.

  The first castle was a castle-ringwork known to have been built here in the 12th century
  by Robert, earl of Gloucester. The roughly oval, raised enclosure to the east of the gatehouse
  probably dates from this period. The castle was much harried by the Welsh, and was rebuilt
  in stone some time in the early 13th century, possibly after being destroyed by Llywelyn
  ab Iorwerth in 1231. The ruined curtain wall is part of this castle, although it has been
  much modified since. It had two projecting round towers, the stump of one of which is visible
  on the east side. There was a simple gatehouse on the site of the present one, and the flight
  of steps well below the present ground level in front of the present gatehouse led up to
  this 13th century one.

  The castle was again severely damaged in 1321-2 by enemies of the unpopular lord of Glamorgan,
  Hugh le Despenser. It was the 14th century rebuilding after this attack that gave it its
  magnificent gatehouse. Only the fronts of the great D-shaped towers and the arch between
  them survive. The steps of the old gateway, now uncovered again, were buried and a drawbridge
  used instead. Blocked windows and the springing of the arch over the gateway still retain
  their dressed Sutton stone surrounds which contrast nicely with the dark local sandstone
  of the walls. Jutting out from the front of the right-hand tower is the broken end of the
  town wall. In the interior of the castle, the foundations of buildings now only remain.

  The monument is of national importance for its potential to enhance our knowledge of medieval
  defensive practices.The monument is well-preserved and an important relic of the medieval
  landscape. It retains significant archaeological potential, with a strong probability of
  the presence of both structural evidence and intact associated deposits.

  The scheduled area comprises the remains described and areas around them within which related
  evidence may be expected to survive.'
source_url: http://cadwpublic-api.azurewebsites.net/reports/sam/FullReport?lang=en&id=2855
source_title: Scheduled Monument Full Report — Neath Castle
publisher: Cadw
observed_date: '2026-07-22'
collected_by: scripts/build_assessment_batch.py
confidence: high
notes: The designation text. Assess the six bands against THIS evidence only; omit any band
  it does not speak to.