Château du Val d'Arguenon

Château du Val d'Arguenon is a private castle in Notre-Dame-du-Guildo, in the Côtes-d'Armor department of Brittany, set within a green park close to the shore of the Bay of Saint-Malo.

What is the history behind the castle?

The estate is first documented as early as the 15th century. In 1571 Amaury Gouyon, Baron de la Moussaye, rebuilt Le Val for his son Charles, giving the residence the architectural form it largely retains today. Notable figures of the era stayed here, including Prince Henri de Condé. A serious fire in 1758 damaged the building, which was subsequently restored in stages. The most significant 19th-century restoration came from the de la Morvonnais family — Hippolyte de la Morvonnais founded the parish of Notre-Dame du Guildo, the name from which the surrounding village takes its own. Château du Val d'Arguenon should not be confused with the nearby Château du Guildo, a separate departmental estate open to the public free of charge, which stands witness to six centuries of local history.

How do you get there?

Château du Val d'Arguenon sits in Notre-Dame-du-Guildo, part of the commune of Saint-Cast-le-Guildo, on the Côtes-d'Armor coast of Brittany. Arriving by car is the most practical option — the estate has its own grounds, including a motorhome parking area (6 pitches, around 10 euros a night) within the park surrounding the castle. The location is well connected to nearby tourist hubs such as Cap Fréhel and Dinan, making it easy to combine a visit with a longer tour of the region.

What will you see on site?

The castle presents a coherent architectural ensemble, largely shaped by its 16th-century rebuilding with later traces of 19th-century restoration work. It is surrounded by an extensive, well-kept park that is an attraction in its own right — walking paths, mature trees, and glimpses toward the coastline. Today the estate operates as accommodation: it offers guest rooms (chambres d'hôtes) and tree cabins (cabanes dans les arbres), with fresh bread delivered on site each morning. This blend of historic residence and hospitality venue makes Val d'Arguenon an unusual stop — a place where you can spend the night quite literally within, or right beside, centuries-old walls.

When is the best time to visit and what else is nearby?

Spring and summer are the best seasons to visit, when the park is at its greenest and conditions favour walking along the coast. The famous GR34 coastal path runs right by the estate, tracing the entire Breton shoreline — from here you can set off on foot toward Pointe du Bay or Pointe du Chevet in Saint-Jacut-de-la-Mer, each roughly 7 kilometres away. It makes a good base for coastal hikers and for anyone planning to explore the surrounding towns of northern Brittany.

Frequently asked questions

Can the castle be visited as a heritage monument? Château du Val d'Arguenon is a private estate that operates mainly as accommodation (guest rooms, tree cabins, motorhome parking) — it is not a museum with regular visitor access like the neighbouring Château du Guildo.

How is it different from Château du Guildo? They are two separate sites in the same area. Château du Guildo is a departmental estate open for free public visits, while Val d'Arguenon is a private property offering overnight stays.

What attractions are nearby? The GR34 coastal trail, Pointe du Bay and Pointe du Chevet (about 7 km on foot), plus the towns of Saint-Jacut-de-la-Mer, Cap Fréhel, and Dinan within reasonable driving distance.

Is there parking for motorhomes? Yes, the castle park includes an area with 6 motorhome pitches, priced at around 10 euros per night.