Tokyo

Tokyo is the largest city on earth and the one that best rewards not having a plan. The transit system (13 Metro lines, the JR Yamanote loop, the Toei subway, the private railways) takes you anywhere within 30 minutes; the convenience store food (7-Eleven, FamilyMart, Lawson) is better than most restaurant meals in other cities; and the neighborhoods shift character every 500 meters — Shibuya's crossing and the chaos, Yanaka's preserved pre-war wooden streetscape, Akihabara's electronics density, Harajuku's fashion subcultures, Shimokitazawa's vintage shops and live music venues. The food operates at a systemic level of quality that has no equivalent anywhere — more Michelin stars than any other city on earth, but the ramen shop near the train station is also extraordinary. Tokyo requires multiple trips to begin to understand and rewards every one of them.