Iglesia de Nuestra Señora de la Asunción Monument · Hornos, Sierra de Segura, Jaén Gothic church from the first half of the 16th century, the work of stonemason Juan de Múgica between 1523 and 1549, with a doorway considered one of the earliest examples of plateresque style in the province of Jaén. Photo: Martin Haisch (CC BY-SA 2.0) What to see and do in Hornos