The diversified and rich archeological heritage of Brittany is mostly known through the megaliths. Erected in the Neolithic age, imposing standing stones are raised in their thousands all over Brittany: gathering or burial places, astronomical landmarks or boundary stones marking the frontier between two worlds? Their meaning remains uncertain, just as the way to approach them. There is still a lot to be discovered, and excavation sites reveal their secrets in dribs and drabs. 

In 2006, in Belz (Morbihan), a team working for the INRAP (National Institute of Preventive Archeological Research) brought to light an exceptional site of about fifty standing stones and a great number of remnants: bloks of granite, networks of ditches, wall foundations, pits and scatterings of tiny stones. The megalithic alignments in Belz, unlike the famous site in Carnac, is preserved in its original sedimental environment, which is of major interest to scientists. They will now be able to collect precious information concerning the setting up of this architecture, and its abandon.  Remains of the gallo-roman era are equally frequent in breton soil, and excavations prior to any town and country planning projects, are very often fruitful. In particular, these discoveries bear witness to birth of cities like Vannes (Darioritum) or Rennes (Condate) during the Roman era. 

The increasing interest in submarine archeology, enabling the discovery of ship wrecks that were thought lost, is certainly going to raise to the surface many treasures still. In 1995 for instance, off Saint Malo, the wrecks of pirate frigates dating back to the early XVIII th century werer found. An important research site has been going on there since 1999.

Lesser known,  industrial archeology concerns the study of industrial heritage. This discipline has good prospects in Brittany, where there is a whole host of well preserved sites: a flurry of mills, smithies, but also factories linked to the coastal industries (canning factories) or to urban industry (cookie factories, potteries,...) Several Eco-museums have taken charge of the development of this heritage in connection with its natural, social and human environment.