Barcelona has more bars, cafés and late night haunts per capita than any other city in the world.
Ranging from colourful tapas bars , outdoor cafés, chocolaterias, it also has a uniquely wide range of bars: coctelerías (cocktail bars), whiskerias (often singles bars with professional escorts), xampanyerias (Catalan cava, sparkling wine bars), and beer halls. Most stay open until about 2:30am, some even later.. Source: barcelona