Church Island (Welsh: Ynys Dysilio) 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 off the Belgian Promenade. The whole 2.7 acres (11,000 m2) of the island is taken up with St Tysilio's church, constructed in the 15th century, and the churchyard. The 20th-century bard Cynan (Albert Evans-Jones) is buried in the churchyard. The Anglesey Coastal Path passes the head of the causeway.