Although Barcelona is pretty much an 'anything goes' city when it comes to dining out, there are a few classic establishments that require a slightly nicer attire. The city's Fine Dining scene is ripe with high-end restaurants, classy food and elegant people, although no matter how 'Fine' it is, there's still a down to earth, unassuming vibe to most places. Whether you're in the mood for Mediterranean Fusion or classic Catalan cuisine, Barcelona has a variety of nicer options. One of the unique things about dining in the city is that many of the restaurants are situated in heritage buildings, with beautiful architecture and a rich history to accompany the meal. You're not only eating delicious food, but you're dining in style in one of the Mediterranean Coast's most magnetic cities. La Dama restaurant is an example of a place situated in one of Barcelona's Art Nouveau buildings, constructed in 1918.
In addition to the architecturally renowned buildings, many of the restaurants in the Old City are located in quaint and charming locales, small enough so that you feel like you're in an intimate setting, yet not that you're seated on top of each other. Montiel and Pla are great options in the Born and Gothic Quarter (respectively).