Valentine’s Day isn’t just about greeting cards, red roses and heart-shaped boxes of chocolates. These Atlas Obscura favorites reveal the many sides of the holiday—some more sour than sweet. (Plus an unusual gesture of love from a man named Valentine.) Where in the World Is Saint Valentine? by Jessica Leigh Hester If you’re a romantic or chocoholic, you might crush on Valentine’s Day, but if your tastes skew more toward the macabre—say, actual organs instead of heart-shaped cards—you might feel more flushed when you think about relics. In that case,…