Elegant but not pretentious, Trattoria No. 10 is a favorite with Chicagoans who work in the Loop. A professional restaurant designer once told me he considers this one of the best-designed restaurants in the city: the burnt-orange tones, ceramic floor tiles, and gracefully arched ceilings set a dining-in-Italy mood. The house specialty is ravioli, which can be ordered as an appetizer or as a main course (recent fillings included butternut and acorn squash, topped with walnut sauce, and homemade Italian sausage and mozzarella, served with spicy Arrabbiatta sauce). If you're not in the mood for ravioli, there are plenty of other interesting pasta dishes to choose from, such as farfalle with duck confit, asparagus, caramelized onions, and pine nuts, or the linguine with roasted eggplant, grilled tomatoes, and smoked mozzarella; there's also a daily risotto special. While Trattoria No. 10 serves beef, veal, and a decent variety of seafood dishes, the restaurant's strength is clearly pasta. For a lighter (and cheaper) meal, stop by after work for the all-you-can-eat buffet at the bar; $10 (with a $5 drink minimum) gets you tastes of beef tenderloin, shrimp, and various pasta specials.