This massive temple to fresh Greek seafood and specialties occupies the bottom three levels of what was once known as the historic Time/Life building near Rockefeller Center, and the food impresses as much as the spacious environs. Freshly caught whole fish are on abundant display, and you shouldn’t leave without at least one order of the Avra chips: paper-thin slices of fried zucchini and eggplant elegantly layered together atop a crisp white plate.