The area was settled by the Walser people from the Valais who left behind characteristic "Walser houses", or Stadel, buildings made of wood and stone sitting on short mushroom-shaped pillars.

Historically Gressoney-Saint-Jean and Gressoney-La-Trinité have been two separate comunes.

From 1928 until 1946, the two were united into one commune, officially named Gressoney, which from 1939 onward was Italianized as Gressonei.
After WWII, the two former communes were reconstituted.
The area was settled by the Walser people from the Valais who left behind characteristic "Walser houses", or Stadel, buildings made of wood and stone sitting on short mushroom-shaped pillars.
Historically Gressoney-Saint-Jean and Gressoney-La-Trinité have been two separate comunes.
From 1928 until 1946, the two were united into one commune, officially named Gressoney, which from 1939 onward was Italianized as Gressonei. After WWII, the two former communes were reconstituted.
Gressoney-La-Trinité