Crevecoeur

Despite history being all around them, the French don't tend to have a lot of re-enactors or ren faires. One of them takes place at Chateau Crevecoeur in August of every year. It's got everyone (plus visitors) caught up in a different storyline every year and things get crazy. The grounds are a medieval manor house and outer bailey restored by Schlumberger corporation (which has an exhibit in one of the barns about its history). There's a dovecote that still stinks of pigeons. A demonstration of how Norman architecture fits in with the surroundings and how it was done, including a lot of restoration footage, and the manor house itself. There's also a medieval music exhibit with real and restored instruments of the time. It's open April through October and worth the visit.