My husband & I as well friends from out of town took the "Downtown Through the Eras" walking tour this past Sunday through Historic Milwaukee Incorporated: historicmilwaukee.org/ToursAndEvents/HomePage . I would highly recommend the tour which cost $10 a person and lasted 90 minutes+. Our tour guide, Judy, was very knowledgeable about the history and architecture of the city as it developed in 1800's and on. We were able to go into several buildings to look at the different architecture. I would definitely recommend this tour. We plan on trying all of the tours for the different areas of the city.