For the one in four Americans with allergies or asthma, going on vacation can be like a game of Russian roulette: You never know if your dream destination is going to turn you into a sneezing, wheezing, nose-running mess (or worse). The first step in keeping allergies or asthma from ruining your hard-earned escape? Know your triggers. For 85 percent of asthmatics, attacks are brought on by allergies. Once you’ve ID’ed your allergens, it’s about being in control of your condition, with the help of your physician -- and being in the right place at the right time. Here, the best and worst destinations for your allergies and asthma.