Hanoi, Vietnam

Hanoi's Old Quarter is a living street food map, with entire lanes historically dedicated to a single dish — Pho Street, Bun Cha Street, Banh Mi Street. The city's pho bo (beef noodle soup) is considered the gold standard of the dish globally, slow-simmered for 12 hours with star anise and charred ginger and served from 5am every day.