From Genova and Pisa:
A14 - Exit Pisa-airport.
FI-PI-LI (4 lanes way) direction Firenze exit Pontedera-Ponsacco, follow directions to Volterra.
10 Km near to Volterra, follow direction to Colle Val d'Elsa (stay on the main way: SS. 439) and cross the river.
At Km. 11 follow the private way on your left (not asphalted).

From Bologna, Florence and Siena:
A1 - Exit Firenze-Certosa (only for coming from Bologna)
4 lanes way Firenze-Siena (direction to Siena) exit Colle Val d'Elsa-Volterra, follow directions to Volterra (SS. 68)
2 Km near to Volterra (after indication to Mazzolla on your left) turn right to Pisa-Pontedera.
Stay on the main way (SS.439) for 5 Km about.
At the Km. 11 label, follow the private way on your right (not asphalted).