This is a grandiose building of considerable size which dates from the beginning of the 13th. century and marks the transition from the Romanesque to the Gothic style. It still has the appearance of a fortification that is typical of this style. The main façade features a deep doorway protected by two sturdy Medieval bell towers. The main portal is lined with magnificent sculptures of the apostles beneath capitals decorated with leaf motifs, standing on corbels adorned with fantastic human and animal figures. The apostles are the best examples of Portuguese medieval sculpture, comparable only with the work in the Batalha monastery.
In the interior, the ground plan is Romanesque but the decorations and finishings are Gothic. There is an imposing central nave with a high vault and beautiful ogival arches. There are two more lateral naves extending 70 m, the longest in the country. In addition to many chapels, including the chancel which dates from the reign of King João V, the most impressive feature of the interior is the spiritually uplifting arched space leading to the altar.
There is also a grandiose and beautiful 15th. century Gothic cloister, weathered by time.
Sections of the 3rd. century Latin city walls can also be seen in Évora, sometimes embedded into houses.
The interior has a ground plan in the shape of a Latin cross and only one nave, with Renaissance, Baroque and Rococo chapels. The Capelas da Ordem Terceira (Chapels of the Third Order) are lined with decorative tiles and canvases depicting historic scenes. The Capela dos Ossos (Chapel of the Bones) is decorated with hundreds of human bones and skeletons, which may prove either fascinating or repellent depending on your sensibilities. It is a particularly macabre chapel, designed as a place of meditation for the Franciscan monks.