One of Canada’s three Maritime Provinces, New Brunswick lies to the northeast of Maine. It shares the rugged coastal charm of the American sea states to the south: Lighthouses, covered bridges, rustic inns and rocky Atlantic headlands are all part of its appeal. In the summertime, the sandy beaches at Parlee and the lagoon at Kouchibouguac National Park can feel balmy beyond their latitudes. The 250-mile drive along the St. John River winds past sweeping vistas, nature trails, farmers markets and museums that showcase the area’s rich blend of native and European cultures, including the Acadian descendants of early French farmers.