I think of vacations where we ate like royalty yet lost weight during the trip. Part of it was surely the amount of walking we did, but cuisine had to be a big factor, too.

Japan leads the list. Hard to go wrong with real Japanese food.

Spain was surprisingly high up there, too, despite the amount of fried food we had. I guess the seafood and the portion sizes balanced things out (we mixed multiple Spanish cuisines every trip, so I can't say it was due to one region's food or another).

Thailand has been a mixed bag for me. Some trips, I've done very well (particularly when sticking with traditional cuisines), whereas on others, I've gained a bit of weight.

In the US, travel is rough for me nutrition-wise. I tend to want to visit craft breweries and have a lot of beer, and food tends to involve a lot of carbs and fats.