Arriving by car
From the A1 higway (Autostrada del sole) exit at: Firenze Impruneta.
Followw directions for downtown Firenze for about 3 Kilometers up to the crossroad with Viale Poggio Imperiale. Turn right along Viale del Poggio Imperiale and then left. In 200 meters you'll be in front of the entrance gate; then proceed by car until the Dipartimento, the first building at the top of a flight of steps. At the Dipartimento you will find the indications for the Institute.
By Train - Bus
Get off at Firenze S.Maria Novella railway station. Then the easiest way is by taxi (around 15 minutes in normal traffic conditions).
If you want to go by bus you can take the bus number 11, bus stop name: "Stazione Scalette", in Piazza della Stazione. Then get off from the bus at the first stop in Via del Gelsomino from where you have to walk in Viale di Poggio Imperiale to the main gate in Largo Enrico Fermi,2 (around 10 minutes or 800m). See this map for the detailed route.
From the main gate to the Institute you have to walk for a little until the top of the steps. Once inside you will find the indications for the Institute
Airports to get to Firenze are: Firenze A. Vespucci, Pisa G. Galilei, Bologna G. Marconi, Roma L. da Vinci, Milano Malpensa e Milano Linate.
The airport Amerigo Vespucci in Firenze is about 4 km outside the city, it is connected with major European and Italian cities, and with the two italian intercontinental airports (Roma and Milano).
From the airport you may take a taxi to downtown (20 min.) or to the GGI in Largo E. Fermi 2- Arcetri (30 min.). Otherways you can get the tram using the line T2 (the cost of the ticket to and from the airport is 1.50 euros).
The airport G. Galilei in Pisa (60 km from Florence) is also connected with European and Italian cities and with the intercontinetal airports in Roma and Milano. There is a one-hour rail connection between Pisa airport and Florence.
From Bologna G. Marconi airport you can get a bus shuttle (TPER company) to the Bologna Centrale railway station from where you'll get to Firenze S. Maria Novella in less then one hour.
From the Roma L. da Vinci airport you can reach by train the "Roma Centrale" railway station from where you can reach Firenze S. Maria Novella in less than two hours by a "Freccia Rossa" high-speed train. There are also direct trains to the Firenze rail stations.
From Milano Malpensa airport you can take a shuttle train (Trenord or Malpensa Express) which brings you to "Milano Centrale" station by undergrund (a few minutes) from where you can take a "Freccia Rossa" high-speed train to Firenze (about 2 hours). Alternatively from the airport you can use a bus service (Flixbus) to Firenze S. Maria Novella.