Adjoining the Church of St. Anthony is the Regional Museum of Lagos. Open daily, it today is home to a collection of archeological finds that date back to the pre-Roman era, and also features a collection of Medieval Christian and Islam religious art, including paintings dating from the 17th and 18th centuries.

Lagos is home to the José Cercas Museum, which features canvasses and drawings by the painter, who was born in nearby Aljezur, as well as other prominent Portuguese artists. Various works including Middle Ages furniture, religious art and porcelain are displayed at the museum. From the garden, there are excellent views of the city of Lagos including the Governor’s Castle.

This once powerful fortress was residence to the Governors and Captain Generals of Algarve. Constructed by the Moors, the castle has been modified many times, but even with these improvements it serves an imposing reminder to the city’s past.

More history on the region from prehistoric times through the Bronze Age as well as the Moorish Era can be found at the Aljezur Municipal Museum. This museum, which is now in the building that once housed the town council of Lagos, has exhibits that date from7,000 BC.