Ynys Llanddwyn

Ynys Llanddwyn is a small tidal island off the west coast of Anglesey in northwest Wales. It lies within the National Nature Reserve of Newborough Warren, which includes sand dunes and a rich variety of plants. The island connects to the mainland only at low tide, offering views of Snowdonia and the Llŷn Peninsula. Tŵr Mawr lighthouse stands at its western edge, marking the entrance to the Menai Strait. Geologically, the island features pillow lava, jasper formations and aeolian sand deposits. It was recognised in 2022 as one of the world’s top 100 geological heritage sites by the International Union of Geological Sciences. The island is closely linked to Saint Dwynwen, the Welsh patron saint of lovers. Her ruined 5th-century church, with its unusual cruciform floorplan, remains on the island. Archaeologists have found traces of even older buildings beneath the ruins. The island also has a long history with the sea, including a lighthouse built in 1873 and a lifeboat station that closed in 1903. It became the first RSPB reserve in Wales in 1911. The island has also served as a filming location for movies and TV shows. Visitors walk along more than 16 kilometres of footpaths, including part of the Anglesey Coastal Path. The mile-long beach walk from the car park leads to the island, which shares Blue Flag status with the nearby beach. The clean sea and sandy shores make it a popular destination. The island’s mix of natural beauty, history and legend draws nearly half a million visitors each year. Its quiet paths and open views offer a peaceful retreat beside the sea.