South Korea
Among the various places I've visited, I have never felt as calm and secure as I did in Korea. Whether walking through a big city or a small town, driving on a motorway or a local road, visiting a sacred forest on a mountain hill, or just another rice field—I felt that special 'doesn't make sense to worry' vibe everywhere.
Not being an esoteric enthusiast or even too much of a romantic, I was incredibly surprised by how this place (the entire country, to be precise!) resonated with me, matched with my inner state. I only wish I had more time there.