Summit Brewing Company puts on a great little tour of their facility in south St. Paul. Every Tuesday, Thursday and (most) Saturdays at 1:00 they will show you their brewing process and you will get to sample a little of their beer at the end.
I really recommend it as both a cool indoor activity during the summer and winter months as well as a great rainy day activity.
Check out their webpage for more information!
Reservations needed on Saturdays.
The story of this local brewery is pretty interesting. It began in 1893 in Northeast Minneapolis on the banks of the Mississippi River and in the intervening years has survived prohibition, economic crises and other obstacles. It closed in the 70s only to reopen as a result of the efforts of many preservationists and local activists.
Around the University of Minnesota's Minneapolis campus is this funky and cool neighborhood with the equally funky and cool name. Dinkytown is full of students, coffee shops, music clubs and restaurants of all kinds (including great Ethiopian, Chinese and Vietnamese joints).