Thanks a lot guys for the info.

I have been in Chicago a few times before, mainly with my two married sisters, (who are settled in America since the late '50s) and their husbands. I fell in love with the city also Mc Donalds hamburgers, on my first trip to the US in 1975.
As my sisters live outside the city, we never really got a chance to have a good look at the city. Last time(2004) the 6 of us went on a cruise from Navy Pier, music and food on board, loved it. This time we are spending four nights in the city, hoping to get to know it a bit more, before heading for a week in Wisconsin with my family and friends. We are celebrating a big wedding anniversary.

Frank