Chicago is my favorite city. It is a city like no other. My friend just wrote a blog post that captures so much of the magnificence that I want to capture it here, too. Many times I get asked what to do on a visit to Chicago. This will provide a reference, though it is never hard to create a list. All that matters is how much time you get there and which season it is. Here is the link to Kat Carlson's post, "Oh Chicago."
http://withywindle.wordpress.com/2012/10/04/oh-chicago/#comment-3229
