Feria del Olivo y Romería de San Isidro de Guarromán Activity · Guarromán, Sierra Morena, Jaén Image of Guarromán, not of the place itself. Guarromán holds its Feria del Olivo at the end of July, with fireworks and popular festivities, and the Romería de San Isidro on 15 May, with decorated carts and a rural atmosphere. Finales de julio (Feria del Olivo); 15 de mayo (Romería de San Isidro) Photo: Veinticuatro de Jahén (CC BY-SA 4.0) What to see and do in Guarromán