I started my day with a Chicago Architecture Foundation River Cruise. This is the best way to see the city. The history and architecture of Chicago are explained in an interesting and funny way. I definitely recommend this tour.
I then walked from the Riverwalk, past my favourite building in Chicago - Aqua, to Millenium Park. Anyone who watched the Bundy family in the TV Show "Married with Children" will recognise the Buckingham Fountain.
Cloudgate is a large shiny metal bean - great fun!
In the evening, I travelled out to Wrigley Field to watch the cubs Play the Milwaukee Brewers. I sat next to a wonderful retired couple from Iowa who told me that Wrigley Field is their favourite baseball ground. They had been to all the grounds so they should know.