Cellar Bar

Cardigan's Cellar Bar sits beneath the streets of this modest Welsh market town, a proper slice of medieval history that most visitors walk straight past. What you're looking at is a 13th-century undercroft - essentially a stone-vaulted basement that would have served as storage or a trading space when Cardigan was actually important. The thick arched ceiling and worn flagstones tell you straight away this place has seen centuries.

It's not a sprawling museum or a major tourist draw. You're poking around a single historic room, reading plaques, maybe imagining what went on here when merchants and travellers passed through. History buffs will find it genuinely interesting - the sort of thing that makes sense of a town's layout and age. Kids might manage fifteen minutes if they're into that sort of thing; it won't hold their attention much longer.

Free entry is the usual deal with these local heritage spots, though opening hours can be patchy, so check ahead with Cardigan town council or the visitor information before making the trip. You could easily combine it with a wander around Cardigan itself - the castle ruins are worth ten minutes - then head out to one of the nearby camping spots. Happy Campers Family Park and Cardigan Bay Holiday Park are both within two miles, making this a reasonable half-hour detour on a rainy afternoon if you're based in the area. It's not something to drive an hour out of your way for, but if you're already exploring Cardigan, duck down and have a look.