The idea of creating the museum arose from the need to value and promote the historical memory of the island. The project was developed and implemented in a partnership between the Cultural Heritage Institute and the City Council of Sal, with the acquisition and donation of heritage properties by some private individuals.

Opened on 07 November 2015, this museum's mission is to safeguard, enhance and promote the historical, ethnographic and cultural heritage of the island of Sal for public enjoyment and particularly for new generations.

The Sal Museum is dedicated to research, collection, documentation, cataloging and conservation of cultural properties of heritage value associeted to the history and culture of the island. Also, make the cultural properties an instrument of education, identity construction and promotion through its exhibitions and publications.