Frómista

San Martín de Tours was built in the late 11^th century and is notable for its three apses, octagonal crossing tower and pair of cylindrical towers at the western end. Look closely at the capitals and the more than 300 corbels beneath the roofline, carved with biblical scenes, animals, grotesque figures and even some erotic imagery. Its remarkably pristine appearance is partly modern: a major restoration between 1895 and 1901 removed later additions and reconstructed parts of the medieval building.

Frómista has the largest group of locks on the Canal de Castilla, with four consecutive chambers numbered 17 to 20. Together they overcome a drop of more than 14 metres, allowing barges to move between different water levels. The nearby towpaths were once used by mules and oxen pulling the barges, while the former lockkeeper's house now serves as the local tourist office.

The Gothic Iglesia de San Pedro houses Frómista's Museo de Arte Sacro. Its most important works are 29 Hispano-Flemish panels from a late-15^th-century altarpiece originally made for Santa María del Castillo; they were stolen in 1980 and recovered the following year. The museum also preserves the paten associated with the 1453 "Miracle of Frómista", in which a consecrated host was said to have stuck to the paten until a dying man confessed that he had concealed an unresolved excommunication.