Valle Crucis Abbey (Valley of the Cross) is a Cistercian Abbey near Ceiriog Valley Park. It was built in 1201. Valle Crucis was dissolved in 1537 during the Dissolution of the Monasteries, and subsequently fell into serious disrepair. The building is now a ruin, though large parts of the original structure still survive. Founded on the site of a temporary wooden church it is the last Cistercian monastery to be built in Wales. Valle Crucis was the spiritual centre of the region. century earlier. The location was raised was originally established as a colony of twelve monks. The completed abbey is believed to have housed up to about sixty brethren. The monks and the abbey itself came under threat from various political and religious events.