The Fourteen Wonders and Fourteen Treasures of Ancient Britain | by Eric Fitch

The Fourteen Wonders, which describe ancient ruins, rivers, lakes, cairns and other landscape features which Nennius, a 9th-century monk, considered important enough to record in his plan to legitimise the origins of the British. The accounts of the Treasures derive from late medieval Welsh legendary texts, and most are placed in the previously Celtic-speaking regions of northern England and southern Scotland.