Boston has a long history with chocolate, going all the way back to the Colonial days. For those in the here and now, however, one of the best ways to get their chocolate fix is by taking a tour. Luckily, the Hub is home to two operators who point chocoholics in the right direction. Old Town Trolley’s three-hour One & Only Boston Chocolate Tour (617-269-7010, trolleytours.com/boston) chauffeurs visitors around several sweet sites, including Top of the Hub and The Langham Boston’s Chocolate Bar, where they can sample all kinds of chocolate concoctions. Not to be outdone, Boston Chocolate Tours (617-971-8436, bostonchocolatetours.com) has two walking tours—one in the Back Bay that explores Newbury and Boylston streets, and one in the South End—that feature samples of chocolate treats, including cupcakes, from various shops along the route.