At the beautiful Piazza del Campo in Siena you can watch all kinds of people moving around, in the summer it’s especially tourists. That makes it a great place for streetphotography.
I found this motive of a mother taking pictures of her sons playing around interesting, and I like the contrast between sun and shadow.
In 2008 even James Bond visited Piazza del Campo in “Quantum of Solace” take a look here
If you want to know more about Il Campo you can check this out.