The Castle of San Sebastián (Spanish: Castillo de San Sebastián) is a fortress located in Cádiz, Spain, at the end of La Caleta beach on a small island separated from the main city. It was declared Bien de Interés Cultural in 1993.

Image Source: Diego Delso, delso.photo

The castillo de Santa Ana, also known as Castillo de Las Roquetas,[1][2] is a fortification built between the 16th and 17th centuries, located in the town of Roquetas de Mar (Almería) which was used for refugee to the inhabitants who lived near the port.[3][4] It has an oblong shape.[4]Near the castle there is a lighthouse.[3]

Image Source: Informagico

The New Castle of Manzanares el Real, also known as Castle of los Mendoza, is a palace-fortress erected in the 15th century in the town of Manzanares el Real (Community of Madrid, Spain), next to the Santillana reservoir at the foot of Sierra de Guadarrama mountain range.

Image Source: Flickr

Author: Ramón Durán from Madrid (Spain)

The Castle of Alarcón forms part of the fortifications built around the town of Alarcón in Cuenca, Spain. The fortress is composed of a walled enclosure, which houses the heart of the population and the castle proper, and of five exterior towers, separate and strategically placed.

Image Source: Castillo de las Altas Torres. Alarcón

Author: emeritense from Madrid