Various films have been shot at this site, including The Vikings (1958) by Richard Fleischer with Kirk Douglas and Tony Curtis.

From 1892, it was sold to various private owners before being bought by the historian Frédéric Joüon Des Longrais in 1931 who, having a lifelong passion for archeology, undertook restoration which took over twenty years.

The cliffs, on which it is built, gave excellent protection from any attempted invasion from the sea and provided warning of an approaching enemy; clear views of the English Channel, the Emerald Coast, and a large part of the Bay of St-Malo.

Construction materials were easily accessible with granite coming from the heart of Brittany, and sandstone directly recovered from the surrounding cliffs.

There are traces of old quarries on the coast, whose connection to the castle is revealed by toponyms such as "Port Taillé" which can be found on the cadastre, and wood was plentiful from the many forests that existed nearby in medieval times.

Albert II, Prince of Monaco made a private visit to the castle, July 5, 2012, in the footsteps of his ancestors the Goyon Matignon.

Within the barbican is a small medieval garden, a "Bricole" (a kind of catapult) and one gains a panoramic view of the bay of St Malo.

The courtyard contains several installations, such as the water cistern, the chapel (built during Louis XIV's reign), the governor's house, and the dungeon.

The water cistern, with a capacity of 20,000 L, was expected to have been sufficient to serve the entire garrison (about forty men) although given the maximum retention volume seems limited.

Ballistic adjustments were made by use of the runway – a granite circle on which the cannon was placed and guided the wheels of the gun as it was maneuvered into position.

On the path leading to the castle stands the menhir of La Latte ('Doigt de Gargantua' According to legend, at a time when humans and Korrigans lived among each other, they were terrorised by giants.

Consequently, the islets that are found in the sea are believed to be pieces of his body and the menhir his raised his finger protruding from the ground at Fort La Latte.