The first thing that catches the eye of visitors gazing upon the outside of the church of Sant Miquèu is its stunning 16th century belfry, set on a facade in a narthex; the same architectural solution can also be seen in the church of Sant Martin de Gausac.

The facade, which dates from the late 13th or early 14th century, bears faithful witness to the artistic evolution of Romanesque architectonic language towards early Gothic forms (the same reference is to be found on the facade of the church of Sant Estèue de Betren). It is structured upon five decreasing arches which illustrate different biblical episodes with the aid of anthropomorphic sculptural elements.

Before entering the church, the visitor's attention will be caught by the ancient tympanum which decorates the original Romanesque facade and which is now embedded in the west wall next to the entrance door; there is also the typical Romanesque-style representation of the Crucified Christ, wearing a knee-length tunic and in a front on, prone position.
Once inside the temple, we come upon the striking baptismal font with an iconography of vegetal motifs sculpted in relief, a very common trait in 13th century Aran valley fonts.

The Gothic altarpiece which decorates the central apse, attributed to the Master of Vielha, stands out at the back of the nave. However, there can be no doubt that the most emblematic piece of the church of Sant Miquèu is a Romanesque sculpture of Christ which originally formed part of a much greater sculptural ensemble. This sculpture, which was a fruit of the mature period of the workshop of Erill la Vall, is one of the most paradigmatic pieces of 12th century Romanesque sculpture.