This is probably one of the most famous art galleries in Italy, and for a very good reason: Michelangelo’s David is the star of its collection and attracts countless visitors every year. Besides, you can enjoy a rich collection of renaissance paintings as well as temporary collections, but I’d recommend you to choose a separate day to visit the gallery - it’s rather big, and if you want to thoroughly explore it, it’s worth a day when you’re not seeing too many other things.