The poem here cited is Walter Savage Landor’s “Ad Larium” (“To Lake Como”) from his
1820 collection of original Latin verse Idyllia Heroica (Heroic Idylls). Translated into English (by John Talbot), it reads:

O Como! Along your ragged shores
You deny none of the pious the shelter
Of a painted wall and stone roof;
From where you are, you hear the sailors’ many reports
Of astonishing storms, nor do you repel them from your peaceful shore;
But you soon prepare new wonders, either in the form of the south and east winds
Battering the caves even in summer,
Or a blinding hailstorm drawn up
From the bed of the surging River Adda.