The Hospital is already documented in the 15th century, having at the time a chapel dedicated to Our Lady of the O. The building that has survived to this day presents elements of the 16th and 17th centuries, with others the result of successive reforms undertaken until the twentieth century.

It is a rectangular building with two heights. On the short side that looks towards the Camino de Santiago, it presents on the ground floor, to the left, an opening in the shape of a semicircular arch, with a small lintel window on the other side of the wall. On the upper floor there are two square windows with ashlar windowsill. On the main façade, it has a central axis with a gallery on the upper floor, with the lintel openings alternating in the rest of the façade.