Visit one of the many Bodegas just outside of town. Many of them have guided tours in English but most require prior booking, even if it's just calling half an hour before the tour. The tourist office can provide a list of the bodegas, their contact details and prices. Many are located near the train station.
festivals
The best time to visit Haro is for the major event of the year: The Batalla Del Vino. Taking place every St Pedroâs Day, 29 June, the weekâs festivities reach their climax when hundreds of people, dressed from top-to-toe in white with red scarves, hike up to a nearby hill, have a quick church service and then chuck red wine at each other until they are white no more. Walking through the streets is like a ribena berry overdose. Apparently itâs all to do with land and a dispute with a neighbouring town that dates back to the 10th century.