In Florence there will be a special appointment: the illumination of an historical building with the colour of the Italian flag: green, white and red.
On the ancient "Palazzo della Borsa", the building that today host the local chamber of commerce, from 9.00 pm there will be some coloured lights to celebrate the anniversary of the birth of Repubblica Italiana. The show will last all night long for several days. You can see the palace on this picture.
See on google maps where it is.