Oviedo - Santullano

In the outlying district of Santullano (reached by way of Calle G. Conde, on the Gijón and Avilés road) is the largest pre-Romanesque church in Spain, San Julián de los Prados, measuring 25 by 30m (82 by 98ft). An unusual feature is the two-level apse, with the altar on the lower level and a concealed chamber above it.