On a platform next to the River, on an ancient Roman necropolis were still visible a few decades the ruins of a chapel that the tradition called São Sebastião. The construction of the high school and a Sports Pavilion have motivated an archaeological intervention, which in turn led to change the deployment of new equipment. Today, on site, plus a part of the Roman necropolis can be visited, is open to visitors the chapel of St. Sebastian, completely rebuilt, where is exposed the main espolio exhumed.

Convent built in the 17th century, being situated in a rocky elevation. This location has views of the village and to the Guadiana river. With the extinction of the religious orders in the 19TH century 30 space is voted to the abandonment by the authorities. In the late ' 70 of last century the convent is purchased by individuals that turn into his residence, the Church having been reserved for concerts, exhibitions and other cultural initiatives. Currently, the convent of St. Francis is a cultural center of great importance for the village of Mértola.