Located inside the Castle, where exhibitions of the archaeological heritage of the municipality of Alcoutim are on display, with a historical journey that began more than 5,000 years ago, covering the Neolithic, Chalcolithic, Roman, Visigothic and Islamic periods, relevant in the archaeological research carried out in recent decades in Alcoutim.

This museum showcases the history of sacred art from the municipality's various churches. The collection consists mostly of photographs and panels.

This museum showcases the entire history of the Guadiana River, from river transportation of minerals to various types of artisanal fishing, and the smuggling activities that occurred during the Estado Novo era. A highlight is the exhibition of miniatures by José Murta, entitled "Traditional Boats of the Lower Guadiana."

At this nucleus you may admire a classroom from the 1950’s/60’s, with all the elements and materials used at the time, from the wood writing-desks to the old school books, blackboard and maps, among others.