Treiso is situated at an altitude of 420 m, on the hills above Alba. It is a village of the Lower Langhe situated at the meeting point of five hills. Treiso, or Terzius, is on the "Magistra Langarum" road which from Alba Pompeia led to Gaul on the other side of the Alps. It is situated about 7 km from the city of Alba.

Being in totally hilly territory, to get to Treiso you must travel a road that winds it way among the vineyards of nebbiolo, Barbaresco and barbera wines.

Treiso produces two DOCG (Controlled and Guaranteed Designation of Origin) wines: Barbaresco and Moscato d'Asti and two DOC (Controlled Designation of Origin) wines: Dolcetto d'Alba and Barbera d'Alba.
Hazelnuts of the much-appreciated Langhe Tonda Gentile variety and cheeses are also produced, while the many oak woods allow collection of the precious Alba white truffle (Tuber Magnatum Pico).