The construction is considered to have begun about 1330. The original building in Altstadt was subsequently demolished and materials from it were used to build the new cathedral on Kneiphof. The soil on which the cathedral was built was marshy, and so hundreds of oak poles were put into the ground before the construction of the cathedral could begin. After the relatively short period of almost 50 years, the cathedral was largely completed by 1380, while works on the interior frescoes lasted until the end of 14th century.