San Felipe Castle

San Felipe Castle is a sixteenth-century fortress guarding the entrance to the Ferrol estuary in Galicia, one of the most important defensive structures on Spain's northwestern coast.

How was the castle built?

Construction began in 1557 on the orders of King Philip II, who gave the fort its name. Ferrol was then a strategic port supplying ships of the royal fleet, and the rivalry among European powers for control of the seas demanded a solid defense of the estuary entrance. Together with the forts of Nuestra Señora de la Palma and San Martín on the opposite shore, San Felipe Castle formed a triangle of crossfire that kept Ferrol virtually impregnable for centuries. A heavy chain was even stretched between San Martín and San Felipe to physically block enemy ships from entering the estuary.

The castle's present appearance comes mainly from an eighteenth-century overhaul. Between 1731 and 1755, engineer Francisco Montaigú designed a series of defensive reforms — a hornwork, a moat, and the main gate — based on Vauban's fortification principles, adapted to the local terrain. The main construction work was finished in 1775, and it's this eighteenth-century form that visitors explore today.

What history has the castle witnessed?

San Felipe's defenses proved themselves in battle more than once. In 1594, an attempt by the English navy to seize Ferrol was repelled, and in 1639 a French squadron led by Admiral Henri d'Escoubleau also failed to break through. The biggest test came at the Battle of Brión on August 25, 1800, when British forces under commanders Warren and Pulteney tried to force their way into the estuary and take the city — the triple line of fortifications at the entrance defeated the numerically superior British force.

What will you see on a visit?

The castle showcases the bastioned layout typical of early modern military architecture — thick walls, a moat, a hornwork, and an imposing main gate. From its ramparts, the views over the Ferrol estuary and surrounding hills are sweeping, and on their own are one of the main reasons to make the trip. The site has held Cultural Asset of Interest (Bien de Interés Cultural) status since 1994, and in 2000 it was purchased by Ferrol City Council for 165 million pesetas, paving the way for full public access.

How do you get there?

San Felipe Castle sits on the right bank of the estuary, about 10 km from Ferrol's city center — roughly a 20-25 minute drive. Admission is free. The castle is open every day, including holidays: mornings from 10:00 to 14:00 and afternoons from 16:00 to 20:00, switching to 10:00-18:00 from October 28 onward. During summer, from July 15 to September 10, guided tours run on Thursdays and Saturdays at 18:00 for €10 (children under 10 free), with dramatized visits added on select Saturdays in August.

Frequently asked questions

Is entry to the castle free? Yes, access to San Felipe Castle is free year-round.

How far is it from central Ferrol? The castle is about 10 km from the city center, roughly a 20-25 minute drive.

Are guided tours worth booking? Yes — in summer (July 15 to September 10), guided tours run Thursdays and Saturdays at 18:00 for €10, and select August Saturdays add dramatized visits.

Why is it called San Felipe Castle? It's named after King Philip II, on whose orders construction began in 1557.