Most expensive city to travel: 2d
Who says: TripAdvisor

TripAdvisor released its second annual TripIndex list of the most expensive cities for travelers, both abroad and at home, and for US travelers, New York and Boston topped the list. The index is a cost comparison of one-night accommodations in a four-star hotel and an evening out on the town, including dinner with wine, and round-trip taxi fare for two people. Boston’s index came in at $450, right behind New York, at $457.