Bright lights, big sushi. These are Ginza’s trademarks—even after Boston’s bedtime. This Chinatown mainstay is open until 4 a.m. on the weekends, luring hungry night owls with plentiful portions and a frenetic table-hopping scene. Behind the sushi bar, chefs meticulously hand roll caterpillar and scorpion maki, while petite waitresses glide around in decorative black robes. The extensive menu lists sashimi, rice soups, noodles, and tempuras along with a well-chosen selection of beer and wine. For the ultimate Japanese sampler, try the Ginza Cruise.