One'), when (after a brief period as a Republic) the Monarchy granted Olvera, by Royal Decree on 8 May 1877, the title of "City" by Alfonso XII, in gratitude for certain horses that sped him from the town of Olvera to one of the Carlist wars. The years of the dictatorship of Franco provided opportunities for the Olvereños, who benefited from the building of the Jerez-Almargen railroad which terminated within the municipality. The project was never finished. This is now a well known "Via Verde" - a nature walk of some 40 km. In 1983 Olvera was declared “A Protected Area of Artistic and Historical Importance”. At the present time, Olvera is dedicated to agriculture, forestry and animal husbandry, activities that are complemented by the tourist activities and the cooperatives.starting in Olvera and reaching Puerto Serrano. Nicholas de Ribera, El Viejo, 'the old one', was born in Olvera in 1487 and took part in the conquest of Peru. In 1535 he was named the first mayor of Lima. Economy Nowadays Olvera largely survives through family cooperatives, based on agriculture, tourism and the construction industry at the coast. Monuments of interest The main monument of this city is itself. A phrase that exemplifies this reality is "OLVERA is a street, a church and a castle, BUT what a street, what a church and what a castle!", for that reason Olvera was declared “A Protected Area of Artistic and Historical Importance” in 1983. Nuestra Señora de la Encarnación church Dominating the area, like the top of a pyramid, is Parroquia de Nuestra Señora de la Encarnación (the Parish of Our Lady of the Incarnation) next to the Arabic Castle: it is the vertex of a white expanse of houses amongst olive groves. This church, in neoclassic style, was built by the orders of the Duke of Osuña in 1822 (which created a debt with the Olvera township by not investing the taxes in the improvement of the town) on the foundations of a small gothic- mudéjar (Andalucian Moorish) style church (conserving and incorporating a small baptismal room), which in turn was built on the foundations of an Arabic mosque. The work was finished in 1843, culminating in one of the greatest churches of the province, with dimensions worthy of cathedral. In 1936 republican revolutionaries burnt some of the icons and images along with the interior during the Spanish Civil War. In the