Dome

Close view looking up exterior structure, depicting how column tapers; The Richard J. Daley Center houses more than 120 court and hearing rooms as well as the official law library of the City of Chicago. The building also houses office space for both the city and Cook County, of which the City of Chicago is its seat of government. In the middle of Daley Plaza, the building's courtyard, is an untitled Cor-ten steel 50-foot sculpture by Pablo Picasso (usually called The Picasso). Completed in 1967, it was a gift to the City of Chicago from the artist. Source: Wikipedia; http://en.wikipedia.org/wiki/Main_Page (accessed 1/5/2008)