Collinsville has a real Italian-American heritage going back to the coal-mining era, and Piazza Italia carries that tradition forward. The menu leans toward red-sauce classics — lasagna, baked ziti, chicken parmesan — made with the kind of unhurried attention that chain restaurants cannot replicate. The dining room is warm and unhurried, good for a long dinner. The house red is decent and inexpensive. Reservations recommended on weekends.