On a steeply sloping area below the castle lies the old mosque, converted into a Christian church in the 13th century, with a Manueline-Mudejar façade featuring battlements and spires. It is the only one that still retains the volume and some decorative elements of the Arab temple that preceded it, notably the "T" layout, the presence of the mihrab and the compartment in the "qibla" (mosque wall) facing Mecca, the existence of five naves from the old mosque, the statuary, doors, and remains of the mihrab.

The former Misericórdia Church of Mértola houses the first municipal museum of sacred art. This space, known as Porta da Ribeira, presents a unique collection of images and liturgical artefacts from hermitages and chapels of popular worship. Here, the different nuances of humanity's relationship with various references to the sacred are reconstructed, with the exhibition of sacred art from the 14th to 18th centuries, liturgical artefacts, including chalices and processional crosses, and painted tablets.

The Islamic Art Center opened in 2001 and represents the culmination of many years of work not only in archaeological interventions but also in the treatment and study of materials from the Islamic period. The collection, dating from the 9th to 13th centuries, comprises architectural elements, funerary epigraphy, ceramics, metals (copper and copper alloys, iron, and lead), worked bone (including artifacts directly related to weaving and glass objects).

A core part of the old defensive system on the Minho border. This former war zone rises on the banks of the Minho River and offers beautiful views of the leisure park and the thermal baths.

This route is designed for the leisure and well-being of the local population. Along the way, information panels are installed about the region's flora and fauna. The route begins at Pedra Furada, with access to Porta de Salvaterra, and continues towards Valença.

This museum aims to showcase the “Cradle of Alvarinho”, its territory and its people, promoting the Monção and Melgaço Sub-region as a unique territory for the production of Alvarinho wine.

Church with a longitudinal plan and a side chapel, where there is a tomb of Deuladeu, a symbol of local resistance to the Castilians.

Despite maintaining some Mannerist characteristics, such as the two-story cloister, the façade and internal spatial layout of this convent underwent several changes to adapt to current housing.

A long mansion with a striking sobriety and simple lines. The only decorative motif on the exterior is the coat of arms and the pediment above the main doorway. Inside, the decor is richer, with an illusionistic perspective ceiling in the chapel and trompe l'oeil paintings.

This museum is a cultural unit of the University of Minho, which created this space with the legacy left by Dona Maria Teresa Cardeal Andrade Martins Salgueiro, who passed away on October 29, 2001. This is a way to showcase the property and its contents, as well as to witness the lifestyle of an upper-bourgeois family in the Alto Minho region during the first half of the 20th century. In addition to the collection on display, it hosts a variety of events.