While we love Outside Lands, and the Folsom Street Fair, and maybe even the Ramen Festival for the sheer horror of watching famished people wait three hours for soup, the best fests are the unique ones that only happen once. (Before anybody bristles about how Folsom is totes unique, there’s also Up Your Alley and Folsom East.) Castroville Artichoke Festival The last weekend in May — which is not Memorial Day weekend, but the one after — Castroville throws its Artichoke Food & Wine Festival, which has been running for well over half a century to showcase the Pajaro Valley’s...