Samuel Adams Brewery
This brewery has won more awards in international beer tasting competitions for craft beers in the past 5 years than any other craft beer brewery in the world! Their beers are pretty popular and really good. They have a large variety including their Boston Lager and Samuel Adams Summer Ale. It's definitely something you need to experience if you're ever in Boston. Again, this tour is free, but they suggest a donation of $2 to benefit local charities. Also, their tours start pretty early (10am on most days and 9:30am on Saturday). This is great news for those in search of a little hair of the dog to get over your hangover from the night before.
Tour hours and more information can be found here!
[Photo via @kellycanfield]