The Groupon for Chicago today is for a One-Year Membership with Discounted and Free Tours to Chicago Architecture Foundation.
They offer two options – $25 for a One Year Membership for one person or $37 for a household membership for 2 adults and up to 3 children under the age of 18.
See the Groupon for exclusions/requirements, etc.
Not from Chicago? Make sure you check a city near you to see what the deal is for today.