In addition to an extensive archaeological section dating back to late- Palaeolithic times, the museum contains works of art from local churches as well as an exhibition relating to the Lines of Torres Vedras, defensive lines constructed under the orders of the British Duke of Wellington to defend against French invasion during the Peninsular War.

The library moved out in 1970, allowing the museum’s exhibition space to be significantly expanded and Trindade curated eight rooms covering: archaeology; the Napoleonic Wars; the Santa Casa da Misericóridia; early Portuguese culture; ceramic tiles; contemporary painting; the municipality of Torres Vedras; and epigraphy.

Over the years, the museum has been increasing its collection, with special emphasis on archaeology, drawing in particular on the Neolithic sites in the Torres Vedras area, such as the Castro of Zambujal and the Tholos do Barro.

[3] The late Palaeolithic period is represented by stone tools that were found mainly in the sand dunes at Santa Cruz and Cambelas in the Torres Vedras municipality.

[1] In 1809 and 1810 a total of 152 forts, redoubts and other defences were developed as part of three defensive lines between the Atlantic Ocean and the River Tagus that were designed by the Duke of Wellington to protect the Portuguese capital, Lisbon, from possible invasion by French troops during the Peninsular War.