Gdansk, a former trader crossroads, industrial and port city, has sat in the background for years as one of the most underrated cities in Europe. For many years, this city went unnoticed until recently when tourists discovered the hidden gems that the city has to offer. Gdansk is rich in history and brimming with activities for both young and old. Today, this once sleeping giant is popular, at least amongst the younger generation, for its annual festivals and events, particularly the Open’er music festival, which takes place every summer. If Gdansk is not on your bucket list, here are five reasons why you should visit at least once before you…