IT’S ALMOST SUMMER, WHICH MEANS IT’S time to pick a place to go for vacation. Obviously, you’re going to want to pick a seaside city, but which to pick? Chicago Line Cruises put together this scientific guide to the best coastal cities on the planet. Using three criteria — quality of life, tourist popularity, and affordability — they’ve determined what the 25 best coastal cities. Check it out, and take your pick.