Situated on a promontory overlooking the right bank of the Guadiana River and the left bank of the Oeiras River, lies the urban agglomeration of Mértola. Its privileged location has allowed it great military and commercial importance. This picturesque village, with traditional houses and a significant built heritage, has earned it the status of a "Museum Village." Intense archaeological activity has uncovered this vast heritage. A stroll through Mértola reveals the Castle and the Parish Church, both classified as National Monuments.