Such a blow was aimed not only at Wisby, but at all the Hanseatic towns; from that moment diplomatic negotiations with Waldemar were no more to be thought of. This act meant war; war at all costs and at all risks.

"In the year of Christ 1361 King Waldemar of Denmark collected a great army, and said unto them that he would lead them whither there was gold and silver enough, and where the pigs eat out of silver troughs. And he led them to Gothland, and made many knights in that land, and struck down many people, because the peasants were unarmed and unused to warfare. He set his face at once towards Wisby. They came out of the town towards him, and gave themselves up to the mercy of the king, since they well saw that resistance was impossible. In this manner he obtained the land, and took from the burghers of the town great treasures in gold and silver, after which he went his ways."

Thus the contemporary chronicler of the Franciscans of St. Catherine at Lübeck. By a skilful coup de main Waldemar had indeed made himself master of Gothland, then under Swedish suzerainty, and of the wealthy city of Wisby. His aim had been booty, and he had it in rich measure in the shape of gold, of fur, and silver vessels.

Legend tells that the year previous to the attack Waldemar had visited Gothland disguised as a merchant, securing the love of a goldsmith's daughter, whose father held an influential position in Wisby, and who, in her loving trustfulness revealed to him the strength and weakness of the island and town, thus helping him to secure the spot that was rightly regarded as the key to the three northern realms.

The inhabitants, unprepared, unarmed, had been unable to offer much resistance. It was a terribly bloody fight this that raged outside the walls of Wisby; the site of it is marked to this day by a cross erected on the spot where 1,800 Gothlanders fell.

"Before the gates of Wisby the Goths fell under the hands of the Danes,"[7] runs the inscription.

As was the custom among the conquerors of olden days, Waldemar, it is related, entered the city, not by means of the gates that had been forcibly surrendered to him, but by a breach he specially had made for this purpose in the town walls. The gap too is shown to this hour.

When he had plundered to his heart's content, aided in his finding of the treasure by his lady love, after he had added to his titles of King of the Danes and Slavs, that of the King of Gothland, Waldemar proceeded to return home in his richly laden ships. But it was decreed that he should not bring his booty to port. A great storm arose in mid-ocean. It was with difficulty that the king escaped with his life; his ships were sunk, his coveted hoards buried in the waves.

There are still shown at Wisby the two fine twelve-sectioned rose windows of St. Nicholas' Church, in which, according to tradition, there once burned two mighty carbuncles that served as beacons to light the seamen safely into harbour in the day of the town's prosperity. These stones, it is said, were torn from their place and carried off by Waldemar. The Gothland mariner still avers that on certain clear nights he can see the great carbuncles of St. Nicholas' Church gleaming from out the deep.

As for Waldemar's lady love, whom it is said he abandoned as soon as his purpose was attained, she was seized on by the infuriated townspeople and buried alive in one of the turrets of the city walls, known to this day as the "Virgin Tower."