Personally, I'm a huge fan of Hollow Knight, Ori and the (Blind Forest/Will of the Wisps), and Kingdom Hearts. Orchestral soundtracks are just something else...
For me it's Skyrim. Streets of Whiterun, Masser, Jerral Mountains, Under an Ancient Sun, so many tracks that just instantly transport me back to the world I was immersed in throughout most of high school. They bring a sense of peace that comes from exploring in a simpler time.