Italy's 20 wine regions correspond to the 20 political regions. Understanding of Italian wine becomes clearer with an understanding of the differences between each region; their cuisines reflect their indigenous wines, and vice-versa. The 36 docg wines are located in 13 different regions but most of them are concentrated in Piedmont and Tuscany. Among these are appelations appreciated and sought by wine lovers around the world: Barolo, Barbaresco, Brunello and Chianti Classico. Despite its high quality Amarone is not classified as a Docg.