 The principal facade (oriented to the west) is marked by a single portico with three semi-circular arches, decorated with animals and birds, supported on rounded-columns.This triumphal arch entrance-way, is constructed over two limestone capitals and has a cubic appearance, extending from the main facade of the church.Many of the decorations are thought to be reused elements from an older building, likely from a Suebi-Visigothic construction (and has been the centre of historical speculation since the 17th century).