Many breweries open up their doors to the public and offer tours of their brewery. It's a great way to understand the brewing process from seeing what hops they use to visiting the fermenting rooms.
At the end of the tour many breweries offer tutored tastings as part of the package, so you won't go home without tasting a drop of the good stuff!
The following breweries offer tours - click their name to find out more.
Black Sheep Brewery