Declaración de la Muralla Ciclópea como monumento Historical milestone · Ibros, La Loma, Jaén Image of Ibros, not of the place itself. The Cyclopean wall of Ibros, of Iberian origin and built between the 1st century BC and the 1st century AD, was declared a Monumento Histórico-Artístico in 1931, the heritage protection figure used in Spain between 1931 and 1985. 1931 Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in Ibros