page_title: Church of San Juan Apóstol y Evangelista, Santianes de Pravia
section_title: Cultural references
hierarchical_section_title: Church of San Juan Apóstol y Evangelista, Santianes de Pravia / Cultural references
caption_attribution_description: Silo_princeps_fecit
context_page_description: St. John Apostle and Evangelist is a Roman Catholic Asturian pre-Romanesque church situated in Santianes de Pravia, northern Spain.
context_section_description: The church contains a foundation stone in the form of a letter labyrinth ("Silo Princeps Fecit") that records the 8th-century founding of the church by King Silo of Asturias. The inscription Silo princeps fecit singularly combined in fifteen horizontal lines and nineteen perpendicular columns of letters. The T forms the beginning and the end of the first and last line in consequence of which the name Silo is not to be found till the eighth line and the S which begins it is exactly in the centre of that line and of the tenth column thus the name is in the shape of a cross as the letters above below and on each side of the S form the word Silo.
  This letter labyrinth appears to inspire the hypercube of Salvador Dalí's painting A Propos of the "Treatise on Cubic Form" by Juan de Herrera, housed in the Museo Reina Sofia, Madrid.
caption: Foundation stone in the form of a letter labyrinth: Silo princeps fecit
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