Ynys Castell
Ynys Castell (grid reference SH564727) is a small island in the Menai Strait which separates Anglesey and mainland Wales. It is an extruding piece of Precambrian schist lying to one side of the Afon Cadnant estuary. It lies between Ynys y Bîg and Ynys Gaint. There is a causeway running to the island that is covered at high tide. On the island there is a private house. Ynys Castell means Castle Island in Welsh.
Church Island
Church 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 off the Belgian Promenade[1]. The whole 2.7 acres (11,000 m2) of the island is taken up with St Tysilio's church, constructed in the 15th century,[2] and the churchyard. The Anglesey Coastal Path passes the head of the causeway.
Britannia Bridge
Britannia Bridge (Welsh: Pont Britannia) is a bridge across the Menai Strait between the island of Anglesey and the mainland of Wales, originally a tubular bridge of wrought iron rectangular box-section spans, and now a two-tier steel truss arch bridge.
Information by Wikipedia.com
