Behind the 16th-century Palazzo Giusti is the lovely garden, Giardino Giusti, with paths among its formal parterres, past statues, and a hedge maze.
Another path leads from the back, up the steep embankment to a less formal garden with a grotto and views of the city framed by beautiful old cypresses.
Although it's not the largest, it is ranked among the best Renaissance gardens in Italy. Especially in the summer heat, it's a peaceful retreat from the city.