Between 2009 and 2017, the Castalla Castle Heritage Site Social Regeneration Project was executed with the aim of managing its entire cultural and natural heritage. Castalla Castle was one of the basic pillars of this project, and therefore its musealisation began in 2016. In this way, the fortification was equipped and included some contents that made the visit more attractive. The abrupt termination of this social regeneration project made it impossible to continue with its musealisation, as originally planned. Thus, this paper will explain the proposals that were intended to be carried out in three parts –Palau (Palace), Pati d’Armes (Lower Ward) and Torre Grossa (Large Tower)– in order to enrich the limited offer of musealised fortifications in the province of Alicante and turn Castalla Castle into a reference.