The Castello dell'Imperatore rises in the ancient tuscan city of Prato, to around 20 Kms. N/W from Florence. It was built on specific testamentary condition by Federico II° around half 1200 on the rests of a precedent military installation: the rich ghibellino Panfollia Dagomari, in fact, left every good of his to the emperor to condition that he built in Prato an imperial castle. Wish that Federico II° it didn't have difficulty to respect, so much more than the strategic position of the city assured a good overseeing on the streets of communication between Germany and South Italy and besides he could be proclaimed a strong warning to the respect of the imperial supremacy on whole Tuscany.
As every other federician architectural expression, also in this case the sketch of the castle corresponds to a precise symbolic choice, founded in the form of the square and his projections.