Introducing Holyhead (Caergybi)
In the heyday of the mail coaches, Holyhead (confusingly pronounced 'holly head') was the vital terminus of the London road and the main hub for onward boats to Ireland. The coming of the railway only increased the flow of people through the town, but the recent rise of cheap flights has reduced the demand for ferries and Holyhead has fallen on hard times. Regeneration funding allowed the impressive Celtic Gateway bridge to be built (linking the train station and ferry terminal to the main shopping street) and a radical waterfront redevelopment has been promised; but for now, the town centre remains a rather moribund affair.
Holyhead isn't actually on Anglesey at all. Holy Island is divided from the west coast of Anglesey by a narrow channel, although the various bridges obstruct the views these days, and you might not realise that you're crossing onto another island.