Wondrous is the wall-stone; broken by fate, the castles have decayed; the work of giants is crumbling. Roofs are fallen, ruinous are the towers. The grasp of the earth, stout grip of the ground, holds its mighty builders, who have perished and gone. - From 'The Ruin', Anglo-Saxon #BookologyThursday
Since the poem is of Anglo-Saxon origin, the ruins described are probably those of a Roman fort or villa complex. The painting is of Taormina and by deBelmont.