 George Kubler and Martin Soria, in "Art and Architecture of Spain and Portugal", trace the typology to the mid-15th century Aragonese "viril", a window in the high altar created to display the consecrated host.According to Kubler and Soria, the camarín is first utilized in the Basílica de la Virgen de los Desamparados (Valencia), designed by Diego Martinez Ponce de Urrana 1652–1657.In de Uranna's design, one passes from the oval nave through one of two doorways flanking the high altar.