A monument that has been declared a Heritage Site of Local Relevance.
A rectangular plan building with a structural system of single-arch porticoes, all parallel to the facade. The brickwork is masonry. On the inside, there’s a furnace that has been documented as existing since 1836. The street Forns Vells can be found in the old quarter as a reminder of the location of two of the medieval furnaces in Sant Mateu.