Katz's is synonymous with iconic New York City food. The Lower East Side location has remained a steadfast destination for perfectly slow-cured pastrami and corned beef since 1888. There's usually a line, but the wait is nothing but proof of the stacked sandwiches' pure goodness. You receive a paper ticket when you walk in, order at the counter (be ready!), and wait while the servers sling your meats onto cafeteria trays. If pastrami on rye is your kind of late-night craving, then you're in luck -- Katz's is open all night on Fridays. Words to the wise: stock up on napkins and whatever you do, don't lose your ticket.