One of them was the first time in my life I was ever totally aware of silence and darkness- I was 21, living in Vermont's Northeast Kingdom for a summer internship, on the way back from the Pub Out Back in Burke with my coworker.
It was a beautiful late summer night, and we stopped because he had to pee. The night was so nice that we didn't get back in the car, but sat on the edge of a hayfield just quietly looking at the stars. There was barely even a breeze but you could just make out the faintest rustle of leaves, and there was no moon, but the starlight was so bright that you could still see mountains. I had never noticed before the total absence of traffic noise or the lights of houses, but in this spot, there was not a single land-based light in view and that made it really special. Normally you'd think of that as a perfect romantic moment but it wasn't- it was just a perfect moment, period.
I decided right then and there to move back someday.