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Photo: Lisa B. Doyle, CC BY-SA 4.0 via Wikimedia Commons
This Cistercian abbey was founded in 1200 by the Earl of Pembroke, who'd vowed to do so if the heavens preserved him when his ship was caught in a storm. It was populated by monks from Tintern Abbey in Wales, which by way of disambiguation was dubbed Tintern Major while the new abbey was Tintern de Voto — "of the Vow". It was dissolved in 1539 and the lands passed to the Colclough family until the 20th century. It's a substantial ruin with nave, chancel, tower, chapel and cloister, set in wooded parkland with walking trails.
Tintern Abbey was a Cistercian abbey located on the Hook Peninsula, County Wexford, Ireland.
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This is a star fort built by Elizabeth I of England in 1587/88 against Spanish attack; it's over the site of earlier fortifications. Visit by guided tour.
There's been a beacon here since the 5th century, and the tower was completed by 1240, so it's among the world's oldest lighthouses. It's a 35-m-high with four storeys: in the top chamber monks tended the beacon fire and later the lantern. Secular lighthouse keepers took over from the 17th century, until it was automated in 1996.