Wales
Church Island, also known as Llandysilio Island, (Welsh: Ynys Tysilio) is a small island in the Menai Strait on the shores of Anglesey to which it is attached by a short causeway that is reachable only on foot. The dominant feature of the island is with St Tysilio's Church, constructed in the 15th c
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Part of the Wales islands map.
Welsh: Ynys Tysilio; French: Ynys Dysilio
Last reviewed: 2026-08-13.