'the island at sea'

A Neolithic settlement from the 5th to the 3rd millennium BC!

The erosion of time

This small town, on the border between the Marais Blanc (marine alluvium) and the Marais Noir (peat deposits) overlooks the Bay of Mont Saint-Michel.

The town was built on an elliptical granite formation forming part of a group of four such rocks of the same type, along with Mont-Dol, Tombelaine and the Mont Saint-Michel itself. Its name comes from a contraction of the Breton words for "island at sea," as the rock was formerly an island in the middle of the bay of Mont-Saint-Michel.

17th century dovecote in Lillemer

From neolithic times to the present day

Lillemer has been inhabited since the Neolithic period. Discovered in 1995 and excavated since 2001, the archaeological site covers 30 hectares on the hill and in part of the lower lying wetlands. It is the main tourist attraction in the village.

The Marais Noir peat has allowed exceptional conservation and various works have confirmed the existence of a village of about 4000 years old. Lillemer is thus an archaeological site of importance at the regional level. The town hall also houses an archaeological heritage interpretation area dedicated to excavations and the prospecting site can be visited during the Heritage Days.

A magnificent 17th century dovecote, fully restored, is visible near the church at the top of the hill, and reminds that Lillemer once belonged to the Lords of Dol de Bretagne nearby

A great place for walks, hikes and rides

Lillemer is at many hiking and biking tours that discover a vast natural area between Marais Blanc and Marais Noir. The landscape consists of reed beds typical of wetlands and poplar plantations.  


361 hectares - 224 inhabitants - Lillemérois & Lilleméroises