New Zealand punches well above it's weight when it comes to scenery. Other countries are more spectacular, but New Zealand has a bit of everything packed into a compact space.
If you want to see fjords then go to Norway.
If you want to see white sand beaches, black sand beaches, surf beaches, family friendly beaches, dolphin swimming, big game fishing, whale watching, bush walking, virgin native forest, mountains, wineries, geothermal fields, active volcanoes, mountains, desert, glaciers and fjords then go to New Zealand.