Napali Coast and Hanalei Bay, Banff (Lake Louise), Amalfi Coast (Positano),
Also, have to throw in the Grand Canyon. My first time visiting was just a few years ago and it kind of took my breath away on first view due to the scale. I've been back since and it isn't the same, but that first view was crazy.
Tulum, Mexico has to be way up there as well.