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 interior are several frescos, stain glass windows of great value and images of the different phases of the death of Christ can be found, among them a Crucified Christ from the 16th century, discovered 15 years ago in the cellars of the building. The last restoration started in 1994 being closed to the congregation until the conclusion of works at the end of the 1999. At the moment the greater church of Olvera is again closed, due to a fire lasting 15 hours of an image/statue in September 2004, leaving the sacred place in lamentable condition. It is hoped that the necessary money will soon be obtained to reopen the church.

http://en.wikipedia.org/wiki/Olvera