On the edge of Parco Sempione sits the massive Sforza Castle, originally built in the late 14th century, but transformed (and renamed) into a ducal residence in 1450 by Francesco Sforza, Duke of Milan. It is a massive, sprawling structure that is now used primarily as a museum and exhibit space.
The day I visited there was an outdoor exhibit from Cracking Art Group, which specializes in innovative use of plastic materials to evoke a relationship between the natural and the artificial. This particular installation, "Nido di Rondini" (swallow's nest) consisted of huge plastic, multicolored birds throughout the courtyards.
On the street outside the castle, I browsed through a market with all sorts of food stalls (Italian cookies and candies, nuts and spices, cheeses, even a pig on a spit...) as well as jewelry, art, and crafts.
As you can see, it is hard to go anywhere in Milan without getting exposed to some sort of art or design!