Besides my usual and expected answer, I'll have to say some of the natural wonders of the US makes me say that.
Fall leaves
We seldom have the true beauty of fall and when I see it, I'm in awe
Sunsets
A clear nights sky, a full harvest moon, the sun setting on the ocean in the west, or rising on the ocean over here in the East . . . The trees in full bloom, or in full foliage . . .
Cascading stream of water with the morning fog coming off of it.
The Sunshine.
Sunrises and sunsets any where are truly beautiful.
My dog 's eyes especially when he cocks his head as if he's really wanting to attentively understand me.