On each side flank’d with citadels and towers
And rocky walls, and arches massy proof
Against the storm of war. Compared with this
Less[7] and less hazardous emprize achieved
Resistless Alexander, when he cast
The strong foundations of that high-raised mound
Deep in the hostile waves, his martial way,
Built on before him up to sea-girt Tyre.
Nor[8] aught so bold, so vast, so wonderful,
At Athos or the fetter’d Hellespont,