Chicago has a great selection of micro, national and nano breweries. From sours to lagers to barrel aged beers - there is something for everyone. As far as brewery tours in Chicago, you also have a great selection to pick from.
Best Chicago Beer Tours
The following ratings are based on my own experience at some point in recent years of touring the breweries. Your own experience may be better or worse than mine but hopefully, you have a great time. There are many more breweries in Chicago that I have yet to tour so hopefully I can finish this list in the near future.