The miracle of the equinoctial light Curiosity · Barrios de Colina, Montes de Oca, Burgos Image of Barrios de Colina, not of the place itself. Twice a year a ray of sun enters through a window of the apse and lights up for some eight minutes the triple capital of the triumphal arch, running in order over the Annunciation, the Visitation, the Nativity and the announcement to the shepherds. equinoccios de marzo y septiembre Photo: Edmir Silvestre from Rio de Janeiro-RJ, Brasil (CC BY 2.0) What to see and do in Barrios de Colina