Bon dia! This is the official greeting in Catalan, as opposed to the Castilian phrase, "Buenas dias," that I learned from my Spanish class and often use to greet Spanish and Hispanic friends. In Barcelona, it is quite handy to know a few Catalan expressions, especially when speaking with the locals. Barcelona, the capital city of Catalonia, is a large metropolis. My first impressions as we drove along the busy streets of its many districts could be summed up into a few words