All I can say is that Napier was almost completely destroyed in the 1920's by one of NZ's largest earthquakes ever.
The city was rebuilt during the Art Deco era, so if you have an interest in architecture its a good place to visit.
I pretty much took this from the forum site. . . In Wellington we thought we'd catch the yellow circle busses & do some exploring. Will include the Te papa & marine museums, Civic Square, Lambton Harbour & Oriental Parade. Any other suggestions are welcome.