LLeaf from Cosmographia showing map of Ostia by Sebastian Munster, published in 1564, German edition.
Munster (1489-1552) was a German mathematician, cartographer, professor of Hebrew and, for a time, monk.
A view of the actual ruins of Portus in 1582Veduta delle rovine di Porto nell'anno 1582, al tempo di papa Gregorio XIII (affresco di A. Danti nella Galleria delle carte geografiche del Museo Vaticano).
In May 1463, Pius II visited Ostia by boat. He describes the trip in Book 9 of his Commentaries: