Baile Átha Luain · Co. Westmeath
A river town that was old when most Irish towns were a notion.
Athlone sits on the Shannon at the narrowest crossing point in the middle of Ireland. That single fact has been the town's whole story for a thousand years. Bridge it and you control the country. Hold it and you hold the road west. Burn it and you ruin the trade. Everyone who ever wanted Ireland - Norman, Cromwellian, Williamite - came here first.
It's a working town that wears its history on the outside. The castle is squat, grey and obviously useful, the way Norman castles are. Sean's Bar a hundred yards off it has a wattle-and-wicker wall behind glass and a story that the National Museum took seriously enough to keep the coins. The river is thick with cruisers in summer, working boats the rest of the year. The west bank - properly Connacht, technically Westmeath - is where the bistros live. The east bank is where the shopping is.
Don't treat it as a coffee stop on the road to Galway. Stay a night. Eat at Thyme or the Fatted Calf, walk the Old Rail Trail an hour out and back, take the boat up to Hare Island in the morning, drink in the oldest pub in the country before bed. The town has more going on than the motorway services would have you believe.