Diodorus Siculus,
The Historical Library of Diodorus the Sicilian…
(1814)
“ These merchants succeeding in their undertaking, and thereupon growing very rich, passed at length beyond the pillars of Hercules, into the sea called the ocean: and first they built a city called Gades, near to Hercules's pillars, at the sea-side, in an isthmus in Europe, in which, among other things proper to the place, they built a stately temple to Hercules, and instituted splendid sacrifices to be offered to him after the rites and customs of the Phoenicians. ”
