While oenophiles have their wine tours, beer lovers have not been left out. A number of breweries open their doors to those who want to learn how their favorite beverage is brewed or to just smell the hops. In Boston you can take a Sam Adams Brewery tour. In Milwaukee, both the Milwaukee Brewing Company and Miller-Coors are open to the public. Chicago’s Goose Island will show you the process by which it produces over 50 craft beers. And no visit to St. Louis would be complete without a trip to Anheuser-Busch. Click here for more information.