Mills

Brittany, land of tide mills

When the sea withdraws, it leaves behind an energy that Brittany learned early to capture. Along the Rance and the Gulf of Morbihan, dozens of tide mills turned to the rhythm of the ebb, grinding wheat as the water went out.

A machine tied to the sea

The tide mill works in reverse of the classic water mill: a dyke holds back the seawater at high tide in a reservoir pond, then, at low tide, that water escapes through sluices and drives the wheel. The miller therefore works only a few hours a day, to the rhythm of the ebb — a rhythm this wheat- and cider-growing land long knew.

The Morbihan, chosen land

The Morbihan is one of France’s great tide-mill countries: around fifty structures are recorded there. The first mention of a Breton sea mill dates back to the 6th century, but construction intensified from the 17th century. The Paluden mill, built on a dyke at the edge of the Gulf of Morbihan, and the Fosse Mort mill (Le Minihic-sur-Rance), in the Saint-Buc cove, are among the best preserved. The Rance counts about fifteen of them.

Decline and rebirth

Steam, then industrial mills, got the better of most of these mills. Today some have been restored, others have become homes or holiday lets. Their conservation is precisely the question, because the tide mill remains a signature of coastal Brittany.

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Frequently asked questions

What is a tide mill?

A mill powered by the tide: a dyke holds back the sea water at high tide in a reservoir, then releases it at low tide to drive the wheel. It only grinds during the ebb hours.

How many tide mills does the Morbihan have?

The Morbihan counts around fifty tide mills, one of the highest concentrations in France.

What is the oldest tide mill in Brittany?

The first structure discovered in Brittany may date back to the 6th century; in the Morbihan, the building of sea mills intensified from the 17th century.