Malbork became more and more important in the aftermath of the Teutonic Knights' conquest of Gdańsk (Danzig) and Eastern Pomerania in 1308. The Order's administrative centre was moved to Marienburg from Elbing (now Elbląg). The Grand Master of the Teutonic Knights, Siegfried von Feuchtwangen, who arrived in Marienburg from Venice, undertook the next phase of the fortress' construction. In 1309, in the wake of the papal persecution of the Knights Templar and the Teutonic takeover of Danzig, Feuchtwangen relocated his headquarters to the Prussian part of the Order's monastic state. He chose the site of Marienburg conveniently located on the Nogat in the Vistula Delta. As with most cities of the time, the new centre was dependent on water for transportation.