San Isidro, 20th-century agricultural colony Curiosity · San Isidro, El Baix Segura, Alicante Image of San Isidro, not of the place itself. Founded in the 1950s by the National Colonisation Institute on former salt flats turned over to irrigation, San Isidro is the youngest municipality in the province of Alicante, having separated from Albatera in 1993. Photo: 19Tarrestnom65 (CC BY-SA 4.0) What to see and do in San Isidro