The Cult of the Danube for the Rumanians is a generous topic that has attracted an interdisciplinary attention to it. It has preoccupied all those that have researched the great river in it smooth path from the spring, in the Black Wood Mountains, to end point in the sea. Generations after generations, millions of people living the same historical time have lived their existence, the live of the big river. The cult of springs, rivers, most of all that of the Danube, is confirmedbymanyhistorical sources. The Dacianswere going to wars wearing talismans water from the Danube and thus swearing it defeat the enemy in the popular belief, the Danube water could wash the sins and represent good luck, it was kept in golden roses, in the tesaurus. Alexander the Great did not wish to conquer Dacia, only to won the Danube, checking his strategist qualities, but most of all the power of his army in the saved and antrophomorfic fight with the river.Forhim,Istru stood side by side with Zeus and Heracles.The Roman Empire had one aim throughout it whole expansion to keep Danube as border of the empire. Thus they made out of the Danube, the longest river border. They latinised the Greek name Istros to refer to the lower Danube. Later, Decebal, reorganizing the protection of the Dacian territory, assigned strong troops to defend the Danube. During the battles with the troops of emperor Traian, he managed the first strategic manoeuvre at the level of thew hole“Carpathian-Danube-Pontic area”, as Nicolae lorga points out.On the Traian Columna, the god Danubius is shown as Pater Tiberius. Later on, the cult of the Danubian knight was developed mainly among the shipmen that were active in the waters of Danube. They were the ones to keep alive legends and popular beliefs on both sides of the Danube.The special fleetofDanube,Classis Flavia Moesica,has its naval basis at Noviodunum (Isaccea), Axiopolis (Cernavoda) si Aegyssus (Tulcea).The emperor Claudius, the one to decide on transforming Dobrogea into a Roman province by attaching it to Troia, started in 46 b.Ch, the Danube custom. He set there an impressive administrative body that organized mainly the naval commerce.The bridge across Danube is linked to the name of Traian, being one of the largest buildings of the period. It was built in 103 d. Hr., thanks to the genius of Apolodor of Damascus.The discovery of the bas relief Hercules Danube’s – the protector of Danube in 1936, proves that this god was not only known and protector, but as well worshipped by the workers in the stone mine.According to the traditions, as noted by the historians, the Saint Apostle Andrew preached the Holly Book in Scythia Major (South Ukraine) and then in Scythia Minor. This points to the fact that he might have sailed on water, on the great river as well.Many historians and geographers, travelers and priests have witnessed to the wonders of the world, including the Danube. On a German map from the XVth century, the center of the world is occupied by “Europa magna pars orbis terrarum, and between Danube, the Pontiac Sea, Nistru and the Carpathian Mountains was the Big Walachia, the synonym of Great Romania”.