Miranda's former cathedral is the main monument in the old town, a broad 16th-century church with twin square towers and a heavy frontier presence. It reflects a moment when this remote border city briefly held serious ecclesiastical weight.
Inside, look for the Menino Jesus da Cartolinha, a small 18th-century image of the Christ Child dressed in changing outfits. It is a local object of devotion and one of the details that makes the cathedral feel very specifically Mirandese rather than just another granite church.