See Sueton. in Claud. c. 20; Dion Cassius, 1. lx. [c. 11] p. 949, edit. Reimar; and the lively description of Juvenal, Satir. xii. 75, etc. In the sixteenth century, when the remains of this Augustan port were still visible, the antiquarians sketched the plan (see D'Anville, Mem. de l'Academie des Inscriptions, tom. xxx. p. 198), and declared with enthusiasm that all the monarchs of Europe would be unable to execute so great a work (Bergier, Hist. des Grands Chemins des Romains, tom. ii. p. 356).