Ravalet Castle in Tourlaville is a Renaissance fortress built between 1562 and 1575 using distinctive blue schist, exemplifying authentic Cotentin architectural tradition with snout windows, ornate skylights, and corner turrets. Constructed atop medieval foundations by the de Ravalet brothers, the château gained tragic historical significance as the site of the incestuous loves of Julien and Marguerite de Ravalet, executed in 1603. The estate features diverse formal and landscape gardens labeled a remarkable garden in 2004, with French gardens, a mandala garden, and island prairies open to the public, while the park itself offers free access making it an ideal destination for family visits and cultural events.