You must visit this exotic paradise very close to nature as it has forests, snow covered mountains, glaciers. New Zealand has made a big effort to protect and maintain their culture. The coolest thing is to see the glowing worms in Waitomo glow worm cave. You must visit the Abel Tasman National park which provides the experience as you are in thailand. You can go hiking in the Franz Joseph also has glaciers to view. For architecture you must visit Wellington.