Newcastle Castle, Bridgend

Newcastle Castle (Y Castell Newydd in Welsh) sits on Newcastle Hill, overlooking Bridgend’s town centre in Glamorgan, South Wales. Originally built as a ringwork in 1106, it was part of the Norman invasion of Wales, constructed by William de Londres—one of the legendary Twelve Knights of Glamorgan—who served the Norman baron Robert Fitzhamon. The castle marked the westernmost point of Fitzhamon’s lordship and was one of three Norman fortifications in the area, alongside Coity Castle and Ogmore Castle.

The defences were later strengthened, either by William Fitz Robert, 2nd Earl of Gloucester, shortly before his death in 1183, or by Henry II, who took over the lordship of Glamorgan after William’s death. This upgrade added a 2-metre-thick curtain wall enclosing a courtyard 40 metres long, likely in response to an uprising led by Morgan ap Caradog, the Welsh Lord of Afan. Henry II died in 1189, and the castle passed to Prince John, who gave it to Morgan ap Caradog that same year.

When Morgan died around 1208, his son Lleison inherited it. After Lleison’s death, thought to be around 1214, the castle came into the hands of Isabel, Countess of Gloucester, King John’s first wife. In 1217, ownership shifted briefly to the Anglo-Norman baron Gilbert Fitz Richard, who then handed it to Gilbert de Turberville, though he preferred to remain at Coity Castle.

The site

The castle is known for its high-quality stonework, particularly the Norman doorway, which dates to the late 12th century and was likely built at the same time as the tall curtain walls and two square towers. Only the base of the west tower remains, but the south tower still has three storeys. It was remodelled as living quarters in the 16th century, with the addition of Tudor windows and fireplaces.

Visitor information

Today, the castle is ruinous, though some fine stonework survives. It is cared for by Cadw and is open free of charge year-round. A small parking area is nearby, but a flight of ten steps between the two main grassland levels limits wheelchair access.