Forget Boston. This weekend, everything Celtic-related in the U.S. is happening in downtown Dayton. Beginning Friday, the eighth annual Dayton Celtic Festival brings you all things Celtic. There will be live bands, a 5K run/walk, a family fun zone and a historical re-enactment of Highland Scots arriving in the colonies, as well as Celtic workshops teaching courses in music, arts and crafts, language and dance. Attention beer drinkers: there will be pints of Guinness, Smithwick’s and Harp available all weekend. Celtic souvenirs imported from Ireland, Great Britain and Scotland will also be offered by merchandise vendors. Bands headlining the festival include Slide, Blackthorn, Gaelic Storm and Scythian. 5-11 p.m. Friday; noon-11 p.m. Saturday; 10 a.m.–6 p.m. Sunday. And, oh yeah, admission is free. Get details here.