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).

Com uma simpática esplanada com vistas sobre Mértola, este restaurante serve pratos de cozinha tradicional alentejana, com um toque de inovação.

A restaurant with a simple decor, yet comfortable, that serves several Alentejo dishes.

O restaurante A Paragem fica na pequena localidade de Corvos, em Mértola. Além das famosas pizas caseiras é conhecido pelos apetitosos pratos regionais que saem regularmente da cozinha. O cozido de grão e a açorda de bacalhau, bem como o gaspacho com peixe frito (apenas no verão), são algumas das especialidades da casa. O ensopado de borrego, a carne de porco à alentejana e as migas com carne de porco grelhada também não faltam na carta.

A restaurant that serves typical Portuguese dishes, namely regional dishes.

A restaurant with quite a welcoming atmosphere and a modern and sophisticated decor. It serves quit well prepared regional dishes. Varied wine list.