Canal de Castilla

Canal de Castilla is a ship canal in Castile and León, northern Spain, running for more than two hundred kilometers through the fields and plains of this region. It consists of three interconnected branches equipped with dozens of locks that manage the elevation differences across the terrain.

Work began in the mid-eighteenth century under King Fernando VI, who wanted to create a waterway to ease the transport of goods. The project stretched over nearly a century and was completed only in the mid-nineteenth century.

The canal network includes historical industrial structures such as flour mills, warehouses, and docks that reflect Spain's engineering achievements of the 18th century.

Walking paths and cycling routes run alongside the waterways for long stretches, offering calm walks through the countryside of northern Castile. Boat trips are available on several sections, giving a direct view of how the locks operate.

At Frómista, the system includes the only quadruple lock built along the entire route, a technical feature rarely constructed at the time. Several old flour mills, warehouses, and docks still stand along the banks, reminding visitors of the commercial use of the waterway.