Salt Island, Anglesey

It is a natural provider of shelter for the town's Old Harbour from the Irish Sea and is part of the Port of Holyhead.

The isolated broad gauge tramway railway from the Holyhead Mountain quarry used to build the former had a branch to Salt Island, via Newry Beach, to facilitate this.

Although started with an intention to be 2,100 feet long, the inner arm was never developed beyond a rubble spit at the northern tip of the island.

No trace remains of the, presumably, wooden viaduct across the Borth Sach inlet which provided access to the island.

In more recent times, starting in February 2001, the island was expanded into the sea by the process of land reclamation.

The Admiralty Arch, the end of the A5 which links London to Holyhead is located very close to the southern tip of the island.