Grid reference on route: ST 12795 87006
Groeswen means ‘White Cross’, and this may have been another waymarking cross on the medieval route. The village pub is called the White Cross, but this is a modern name. There is a farm called Pen-y-groes on the road out of the village to the north. According to a local tradition, there was an elaborately carved cross on the road below this farm, but no record of it has ever been found.
The chapel at Groeswen was the first Methodist place of worship in Wales, the ‘New House’ built in 1742 under the inspiration of Hywel Harris of Trefecca. The present vestry, which runs along the road and has a mounting block and stairs to an upper floor, is eighteenth century, but the chapel was rebuilt in classical style in about 1870. The graveyard is full of elaborate monuments. It has been called the 'Westminster Abbey' of Welsh nonconformity. Inside, a plaque by the sculptor Goscombe John commemorates the Rev. William Edwards, designer of the famous bridge at Pontypridd and for forty years minister of the chapel - ‘a bridge-builder between two worlds’ as the plaque says.