It was stripped of its works of art , though the choir stalls were kept .
The altarpiece transferred to the Museo Nacional de Escultura in the Colegio de San Gregorio , Valladolid .
It was stripped of its works of art , though the choir stalls were kept , and the altarpiece transferred to the Museo Nacional de Escultura in the Colegio de San Gregorio , Valladolid .