Tallinn gained Lubeck city rights in 1248, gaining admission to the Hanseatic League of European cities. Tallinn Day commemorates this historical event with a day full of cultural and fun activities. The day, first held in 2002, has grown in scope ever since. Join in the fun and festivities!

Source: http://www.tourism.tallinn.ee/eng/fpage/experience/cultural_highlights#!5207_12467_1
Picture source: http://www.tourism.tallinn.ee/static/files/052/t2_tallinna_paev02.jpg