Well it depends. For scenery where I kept saying wow was Milford Sound, New Zealand.
Other really cool places that rate on my wow factor were Paris, Prague, Croatia and some parts of France.
Sydney, Australia
I am from Denmark but I've lived in New Zealand, and I absolutely loved it, beautiful nature, great and hospitable people, amazing culture! New Zealand has everything, if you (like me) are an adrenaline-junkie you have bungy-jump, river-rafting, skydiving etc. etc. you have big cities Auckland, Wellington and Christchurch and so on! Can't recommend it enough!
Hawaii,Sweden.and Japan
France, because it's like a country that has all the cultures in the world condenced into one. So it's like traveling all over the world, but in one flight. Which saves time. ;-)
My favorite place is Cox's Bazar. It is very nice place. It has a long beach, nice wave, fresh air. Environment is very clear and peaceful.
Jacksonhole, WY
Guam was the best place for me
The whole Sri lanka.