"Along the shore beyond, especially to the north, there are many historic wooden summer residences." It can mean a few things ... it depends on the preceding context. My first guess would be the writer had been speaking of some location/area (town, physical landmark, road etc) and when he says 'beyond' he is saying 'beyond this road/town/landmark' that is being talked about. ie "Along the shore beyond this area, especially to the north, there are many historic wooden summer residences."