The medieval Main Church of Alcoutim was rebuilt in the 16th century in the Renaissance style. It has three naves separated by arches supported on columns with Corinthian capitals, and a doorway in the classical style.
A statue of Christ the Saviour, another of São Luís Bispo, from the 17th century, a statue of Nossa Senhora do Rosário (Our Lady of the Rosary), made in the Baroque style, and the sacrarium on the altarpiece in the chapel Capela do Santíssimo (Most Holy) are the most important works of art in this church.