This is the third time in trips through Barcelona that I have stopped at this burger joint near the Cathedral, they list themselves as the best burgers in Barcelona and I cant argue with them at all.
Keep in mind the burgers are substantial. You walk in and fill out a menu card to select what type of bread, burger and toppings then one of the more interesting parts, you pick you side. Seems odd thats the interesting part but when you can choose between Patatas Brava, French Fries or Chicken Nuggets, it gets interesting. The nuggets are actually pretty good but come hungry and enjoy. They also have a nice selection of microbrews including some gluten free options if thats your desire.