The Praça da Erva Jazz Festival, organised by the Viana do Castelo City Council, is the oldest jazz festival in the North of Portugal with 33 consecutive editions, and is also the third oldest at a national level. This Festival holds a prestigious place in the national and peninsular Jazz scene.

The most important Jazz musicians, as well as new projects, have performed on its stages. During the Festival there are exhibitions, colloquia, workshops and Jam Sessions.