On the northern slope of the Castle Hill, the possible Roman city forum creates an artificial platform, supporting the imposing monumental complex of the city of Myrtilis. This entire platform, leaning against the wall, rested on a solid underground gallery approximately 30 meters long and 6 meters high. In Late Antiquity, in the 5th and 6th centuries, lavish religious buildings were erected here; among them, a possible Episcopal Palace and a baptistery, of which significant fragments of a beautiful set of polychrome mosaics remain. During the Islamic period, during the 12th and 13th centuries, this entire area was occupied by …

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.

Created in 1995, the Guadiana Natural Park, which encompasses the municipalities of Mértola and Serpa, boasts flora, fauna, morphology, and, most importantly, landscape features of great beauty and interest. The middle stretch of the Guadiana Valley, between Pulo do Lobo and the mouth of the Vascão River, with its enclosed valleys and numerous tributaries, boasts above-average beauty. Notable are the presence of wild boar, little bustard, great bustard, otter, black stork, griffon vulture, wild olive trees, and mastic trees.

Straddling the municipalities of Mértola and Serpa, this waterfall is of rare beauty. It's approximately 14 meters high, in a place of rich geological heritage, where the river flows with a tremendous roar between two cliffs. A narrow rocky strait strangles the river so much that it overflows, forming a waterfall. The imposing landscape lends a unique beauty to this place, steeped in legend and history. During floods, the drop in water level is reduced, allowing several species to travel upstream to spawn.

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.