Have you ever eaten an orache or a cardoon? Though popular in the Middle Ages, these vegetables are rarely harvested nowadays. But you'll find them in the garden of the Abbaye du Relec (Relec Abbey), which contains vegetables from many different time periods and countries.
The Underwater Museum of Lorient might be a little hard to get to, given that it's literally underwater. Dedicated to shipwrecks and other sunken objects, the museum is made possible by a team of volunteers with a passion for documenting these lost treasures at the bottom of the ocean.