The atmosphere here is of a rare density, as if the weight of seven thousand years of history were crushing the present. Walking along these endless rows of standing stones, one cannot help but feel a shiver: is it a giant astronomical calendar or a sacred place of worship? You can settle at the Aire d'Arradon (30 mins away), a peaceful base to feel the energies of the Gulf. To discover:

• Alignements du Ménec : Wander among a thousand monoliths whose hypnotic alignment creates a dizzying perspective across the moorland.

• Géant du Manio : Seek out this 6-metre colossus in the heart of the pines, standing like a solitary totem capturing celestial waves (a 15-min walk through the forest).

• Tumulus Saint-Michel : Climb this sacred hill, home to millennia-old burial chambers, to gaze out over the entire bay.

Legend has it that the alignments are an army of Roman soldiers petrified by Saint Cornély. Pursued by legionnaires, the saint is said to have turned around and transformed them into stone to escape them. More unsettling: some geobiologists claim that the standing stones are placed on precise telluric crossing points, acting as "acupuncture for the earth" to channel ground energies.

Here, Brittany becomes darker and more mineral. Between the deep waters of the lake and the isolated valleys of the Mené, the landscape seems frozen in a mystic silence. It is a land of black shale and persistent mists where one feels irresistibly drawn to the depths. To discover:

• Abbaye de Bon-Repos: Gaze upon these majestic ruins set by the canal, whose stones still seem to vibrate with the breath of the ancient monks.

• La Forêt de Loudéac: Venture beneath the vaults of oaks and beeches in this legendary forest, considered one of the oldest refuges for local druidic traditions.

Before the dam was built, the Guerlédan valley was home to slate quarries and houses. When the lake is drained, these ghost villages swallowed by the waters reappear.

In Brocéliande, magic infuses every root: this is where the heart of Arthurian mythology beats, between forbidden valleys and legendary paths. The Aire de Ploërmel is your ideal base for exploring these lands of mysteries. To discover:

• The Val sans Retour & the Miroir aux Fées : Gaze upon this black and still lake where the fairy Morgan le Fay would imprison unfaithful knights by creating a mist that made them loop endlessly within their own thoughts. Only the "pure of heart" (Lancelot) was able to break the enchantment, as his mind was perfectly aligned with his soul.

• The Church of the Grail (Tréhorenteuc) : Step through the door of the only sanctuary in the world dedicated to the Quest for the Holy Grail, where stained glass windows and paintings hide esoteric codes.

• The Golden Tree : Admire this chestnut totem covered in gold leaf, erected in the heart of the burnt moorland as a symbol of rebirth and protection.

Many dowsers consider Brocéliande to be a high-vibration site. It is said that certain areas, such as the Hotié de Viviane, are located on crossings of telluric networks so powerful that they could disrupt compasses or watches. It is a privileged place for those seeking to "recharge" through direct contact with the rock.

Nicknamed the "cradle of Romanticism", the town of Combourg cultivates an atmosphere of mystic melancholy. Between the haunted towers of the castle and the colossal standing stone of Sains, you will traverse a land where the invisible manifests at every street corner. To discover:

• Château de Combourg: Visit the Cat's Tower, where the writer Chateaubriand spent his nights trembling before the invisible manifestations of the fortress.

• Menhir du Champ Dolent (Sains): Gaze upon this granite giant nearly 10 metres high, one of the most imposing in Brittany, standing alone like a sentinel.

• Le Lac Tranquille: Walk around this stretch of water bordering the castle, a place conducive to meditation where the reflections on the water invite deep introspection.

In Sains, legend has it that the Menhir du Champ Dolent fell from the sky during a fight between the Devil and Saint Samson. It is said that the standing stone sinks by one millimetre every century. In Combourg, Chateaubriand swore he had encountered the spectre of a former lord with a wooden leg, accompanied by a black cat whose skeleton was actually found bricked up in the tower.

The Privateer City is a stone vessel anchored against the power of the English Channel. Between the tormented rocks and the islets accessible only at low tide, Saint-Malo retains an unsubmissive soul. To discover: The sentinels of the open sea

• Les Rochers Sculptés de Rothéneuf : Discover this granite sanctuary where a hermit priest carved more than 300 faces and sea monsters into the cliff, all turned towards the horizon.

• L'Îlot du Grand Bé : (Accessible at low tide). Walk to this sacred island to pay your respects at the tomb of Chateaubriand, a nameless slab facing the immensity.

• Le Fort National : Explore this sea citadel that seems to rise from the waves, guardian of the city's secrets and naval battles.

Legend has it that the people of Saint-Malo used "watchdogs" (chiens du guet), a ferocious pack released every night onto the shore to prohibit access to the city. The signal for their release was given by a bell, and woe betide anyone who remained on the sand. The spirit of these mastiffs is said to still protect the ramparts on evenings of heavy mist, and some claim to hear their barking mingling with the crashing of the waves.

The journey ends on this granite peak defying the laws of gravity. Mont-Saint-Michel is a high place of spirituality, where the forces of nature and faith converge. The Beauvoir area allows you to contemplate its silhouette bathed in the light of dawn before stepping onto the footbridge. To discover:

• The Abbey and its Lace Staircase: Climb to the top of the building to admire the carved stone details that seem to rise towards the divine.

• The crossing of the bay: (With a guide). Live the sensory experience of the quicksand and the immensity, where water and land merge twice a day.

• Saint-Pierre Parish Church: Push open the door of this more intimate sanctuary where hundreds of candles burn before the silver statue of the Archangel.

Mont-Saint-Michel is considered one of the major points of the "Saint Michael Line", a mysterious geographical alignment linking seven sanctuaries dedicated to the Archangel, from Ireland to Israel. According to legend, this invisible line represents the sword stroke dealt by Saint Michael to drive the Devil back to hell, thus creating a corridor of spiritual protection across Europe.