There is so much to do in Barcelona, especially if you want to taste the famous nightlife of the city. In three full days, you will be able to visit all Gaudí's major buildings as well as the Picasso and Miró museums. You can also stay a week or more. What to do with these extra days? Well, enjoy the beach, visit the nearby village of Sitges or go shopping in the Gothic Quarter.
RE: Meeting Steemit 2 in Barcelona! 5 reasons to come! [English version]