Budgeting is always a huge part of planning your next trip. Perhaps you found a great deal on your flight and accommodations, but how much does the average visitor spend in a day? Thanks to Mastercard's 2018 Global Destination Index, you can figure out just how much pocket money you'll need in some of the world's most-visited cities. Click through for the surprising numbers, and see the total amount visitors shelled out over the year.

[Photo via @fashioninmysoul]