The nail craze has been chugging along in Japan for years now, but it's just hitting its fever pitch here in the States — and this trend doesn't seem to be going away anytime soon. And while it wasn't long ago that salons offered only a polka dot or a cute little flower on the tip of your nail, salons all over the US and Europe are now offering up custom designs without batting an eyelash. We've rounded up our top five destinations to snag these nail art looks. Hey, your nails could really use a vacation . . .