Ruinas del Castillo de El Nicio Historical milestone · Estepona, Costa del Sol Occidental, Málaga Image of Estepona, not of the place itself. A 9th-century fortress in the municipal term of Estepona, which played a prominent role in the rebellion of Umar ibn Hafsun against the Emirate of Córdoba, until its fall in the year 923. siglo IX-923 Photo: Emilio J. Rodríguez Posada (CC BY-SA 2.0) What to see and do in Estepona