First mention of Ambasaguas de Curueño Historical milestone · Santa Colomba de Curueño, La Montaña de Riaño, León Image of Santa Colomba de Curueño, not of the place itself. A document of the year 959 mentions Ambasaguas, the first written evidence of settlement in this valley; Santa Colomba does not appear until 1159 and in the following centuries there was a Templar presence here and one of the Order of Alcántara. 959 Photo: Marcosnrd (CC BY-SA 4.0) What to see and do in Santa Colomba de Curueño