Eglwys Gadeiriol Tyddewi / Saint Davids Cathedral

You'll find this cathedral tucked into a hollow just outside St Davids, which feels deliberate somehow - like the builders wanted to keep something sacred away from the everyday bustle. It's one of Britain's finest medieval churches, though calling it just a cathedral undersells what's actually here. The stonework is proper impressive, with a particularly striking tower that dominates the skyline once you're close enough. Inside, the scale hits you. High vaulted ceilings, intricate wooden roof bosses, and that particular quiet that old churches seem to possess.

Historians will spend a good hour poking around - there's genuine medieval craftsmanship on display, and the connection to St David himself (Wales's patron saint) adds real gravitas. Families with younger kids might find it a bit heavy going, though the unusual layout and hidden corners can keep them entertained for 30 minutes or so. The walk down from the town centre is steep but short.

Admission is free, which feels right somehow - no forcing visitors through a gift shop before you've even entered. The cathedral rewards a slow wander rather than a quick tick-off. If you're camping at Caerfai Bay or Lleithyr Farm, you're basically on the doorstep. It pairs well with the coastal paths around St Davids - treat it as a cultural pit stop between longer walks rather than a half-day destination in itself. Go on a quieter weekday morning if you can; weekends pull in coach groups that rather change the atmosphere.