From Greve in Chianti, going south toward Siena, you will encounter the so-called "Chianti Triangle", comprising the towns of Castellina in Chianti, Radda in Chianti and Gaiole in Chianti.
Castellina and Radda have very nice town centers, full of cafes and restaurants preparing good food and, of course, wine tastings. While Gaiole is flat, the other two towns are situated in the hills and they also boast beautiful views of the surrounding landscape.
Near Gaiole, there are smaller towns that deserve visit, among them Lecchi and Vertine. In the same area, there are two castles, noteworthy for their beauty and for the fact that they host two of the most important wineries in the area: Meleto and Brolio, belonging to Barone Ricasoli, lord of Florence.