Los Alcazares is a Spanish municipality in the Region of Murcia, of 15,993 inhabitants, situated on the shores of the Mar Menor in the region of the same name, but also included in the Campo de Cartagena Until 1983 was divided into two halves belonged to Torre Pacheco and San Javier, from that year is secreted and unifies.

It owes its name to the word of Arab origin al-Kazar, meaning castle or fortress as there remains one that is declared a National Monument in 1931. Therefore, the earliest evidence of human settlement in the area corresponding to the Arabs. Murcia Islamic nobility came to enjoy the sea and its waters during the summer and it was these families who ordered the construction of the first palaces to enjoy the Mar Menor.

In the late Middle Ages and early modern period, built a series of defense towers to protect the lagoon from the attacks of pirates. Can still be seen those of Rame, Silva, White, Black and Saavedra.

In the late nineteenth century, this area of ​​the coast again marmenorense accommodate various summer residences, built the old and typical wooden beach resorts on the Mar Menor in addition to the Hotel Balneario de la Encarnación (in 1905). Los Alcazares started out as a summer resort of many interior huertanos addition to the bourgeoisie.

Los Alcazares also became an important fishing village and exchange of goods. An important milestone in its development was the construction of an Army Air Base, now abandoned.
The town of Los Alcazares is independent of Torre Pacheco and San Javier in 1983, reaching an important demographic development since.