Dunkeld Cathedral stands in lawns that run down to the Tay at the west end of the town. It's surprisingly large for such a small place. Building started in 1260 and wasn't finished until 1501, so Gothic and Norman details sit side by side. The nave and tower have been roofless since the early 1600s and are cared for by Historic Environment Scotland. The restored choir is still the parish church.
Inside the tower are rare pre-Reformation wall paintings from around 1490, including a Judgement of Solomon. There's also a Pictish carving of a horseman with spear and drinking horn. The old chapter house holds a small museum and the monuments of the Dukes of Atholl. Entry is by donation, and the riverside grounds alone are worth the visit.