Standing in a vast field of grass while a wind blows. Especialy nice if its night and I can see the stars.
But now that I think about it...everytime I spend time looking at the sky I get this great feeling inside. Maybe Im just sort of stargazer.
The other one is a bit weird. When the first snow has fallen and everything is dying. The whole world is freezing...time stops...and you walk through forests and frozen river/lake side. I dont know...I just feel at peace at those times.
Oh and then there are the basic "hugging someone" and all romantic things.