Cà di Janzo, Mountain village in Alagna Valsesia, Italy.

Cà di Janzo is a small hamlet at the entrance to Val Vogna, on the slopes of Corno d'Otro west of Riva Valdobbia. It consists of a cluster of houses built in traditional Walser style, separated from the neighbouring hamlets of Cà Piacentino to the west and Vogna Sotto to the east by two streams. From the hamlet, the main hiking trails of the area branch out, including one leading to Cima Mutta (2,135 m) with views of Monte Rosa, and the Alta Via dei Walser.

The place name has been documented since the 17th century with variations such as Cadianzo in 1618 and Chasa di Janzo in 1639. These names derive from the Jenz family, who settled in the area early on.

The settlement preserves Walser building traditions through characteristic stone houses with narrow windows and wooden beams. This construction style shows how Alpine inhabitants adapted to the harsh mountain environment.

The place connects to multiple hiking trails, including the Alta Via dei Walser path and routes to Cima Mutta offering views of Monte Rosa. Visitors should wear sturdy footwear as paths are steep and can be slippery in wet conditions.

A historic inn at the location hosted Queen Margherita of Savoy during her mountain visits in September 1898. The building is now known as Relais Regina and recalls this royal connection.