There are two main harbors in Alexandria: the Eastern and the Western harbor. This one is the Eastern harbor, in front of the Corniche, the oldest one. The existence of both harbors dates from the 4th century, when Dinocrates built the Heptastadion.
Dinocrates (332-331 BC) was the Greek architect who designed the city of Alexandria over the rests of the old village of Rhakotis, following the orders of Alexander the Great.