On the façade, you can admire three remarkable porticoes of multiple archivolts, magnificently carved in granite, the work of the late Gothic flaming, noting on both sides already influenced by the Renaissance period (see Artistic Treasures). The robust and cushioned doors are valuable examples of Portuguese carpentry.

The Tower is a Romanesque construction, up to the height of the bells (12th-13th century), with interesting cracks from the same period, with special emphasis on the notable crevice that opens on the east side (see Artistic Treasures). The top part is already the work of the century. XVI, from the initiative of Bishop D. Manuel de Noronha, who left his stone of arms engraved there. The Tower served as a jail for a long time, until Bishop D. Frei Feliciano de Nossa Senhora decided to remove the prison, "tenebrous, which looked more like the grave of the dead" (Azevedo, 1877).

The Lamego Cathedral, built from successive stages, is one of the most emblematic historical monuments in the entire Douro region. It was founded in 1129. It is a cathedral of Roman origin which, on the initial route, received Gothic additions, others already Manueline, maintaining the original Romanesque square tower although it was transferred from the side where in the century. The Cloister was built in the 16th century, but the rest of the architecture reflects the changes made in the 16th and 18th centuries, to the body of the church and chancel, including a Renaissance cloister with a dozen well proportioned arches.