It consists of a series of defensive structures that, during the Middle Ages, made the town and the fortress an impregnable point in the southeast part of the Iberian Peninsula.

The first written documentation referring to a castle at Lorca is of Muslim origin, which in the 9th century, indicates that the city of Lurqa was an important town in the area ruled by Theudimer (Tudmir), who ruled seven cities in southeastern Spain, mentioned in the Treaty of Orihuela that was preserved by the Andalusian historian Ibn Adarí in the thirteenth century:[2] Orihuela, Valentila (possibly an equivalent for Valencia), Alicante, Mula, Bigastro, Eyya (probably Ojós), and Lorca.

[3] During Muslim rule, Lorca Castle was an impregnable fortress and its interior was divided into two sections by the Espaldón Wall.

For 250 years, Lorca Castle was a watchpoint on the border between the Christian kingdom of Murcia and the Muslim state of Granada.

Due to this geographic position, the Castilian monarchs repopulated the town and maintained the defensive structures of Lorca.

The Jewish Quarter was found within the alcazaba, the Moorish fortification, separated from the rest of the city by its walls.

The living quarters were elevated and a common feature was benches attached to the walls, kitchens, stand for earthenware jars, or cupboards.

The plinth where the bimah was located has also survived, and along the perimeter of the interior of the temple were benches where the male worshippers would sit.

[6][7] Lorca Taller del Tiempo (“Lorca Time Workshop”) is a company that uses the castle as a theme park for medieval re-enactments and includes a touristic train that travels throughout the city, departing from the Visitor Centre (formerly the Convent of La Merced).