Neath Abbey (Welsh: Abaty Nedd) was a Cistercian monastery, located near the present-day town of Neath in South Wales, UK. It was once the largest abbey in Wales, Along with Llanthony Priory and Tintern Abbey, the ruins of Neath Abbey are the most important and impressive monastic remains in south-east Wales. Founded in 1130 by , by the late 13th century it had become one of Wales’s wealthiest abbeys.
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