That lighthouse looks incredible! Another of the countries i really want to visit, perhaps when i visit Aus i could make a trip over there; some of the best landscapes in the world it seems.
Sadly there isn't all that much up in that area of New Zealand. There are a few nice beaches and our 'World Famous in New Zealand' Sand dunes but apart from that most of the action takes place South of Northland. If you really want landscapes I would suggest the South Island.