The oldest monastery in Spain
The simple and austere Visigothic-style Monastery of Suso is considered to be the oldest in Spain; it was erected between the 6th and 11th century. The monastery revived in 923 after the conquest of Nájera by Sancho III, the Great, and was inhabited by the Mozarabic monks; the horseshoe-shaped arch at the entrance comes from this period.