A high-quality restaurant near the Colosseum is a pleasant surprise. Sit outside in warm weather, but if it gets too hot, Ai Tre Scalini's naturally cool rooms on the lower level are fantastically refreshing. Sample chef Angelo Annarumi's playful salmon roulades with ricotta cheese and pink grapefruit, or the unusual radicchio and cheese-stuffed zagnolotti (small ravioli) in a delicious lobster sauce. A wide variety of second courses, from orata in crosta di patate con vongole (gilthead bream topped with crunchy potatoes and sprinkled with tasty baby clams) to simple beef with rosemary, are all served with flair.