Paterno Castle
The Castle of Paterno (), also known as Castle of Albaladejo, is a fortress located in the town of Albaladejo, in the province of Ciudad Real, Spain. History 

The castle is of Roman origin, later conquered by the Arabs and re-built in the 13th century. It belonged to the Orden of Santiago, who helped to maintain the castle. Design 

It is a small rectangular fortress. The central area has not been preserved and currently there are only two towers of the castle left. Current situation 
It is in a state of ruin. The castle falls under the protection of the Declaration of the Decree of April 22, 1949, and Law 16/1985 on Spanish Historical Heritage. As of 2023, it is open to tourism all year with free passage and entry. Surroundings 

The Roman village of the Bridge of Olmilla: In this bridge, near Albaladejo, remains of a Roman village have been found together with interesting mosaics. The Church of Santiago is a 16th-century church close to the castle. Sources 
castillos.net
monumentalnet.org

References

Castles in Castilla–La Mancha
Castles of the Order of Santiago