The line "Is this heaven?" from Field of Dreams is a poignant moment in the film that highlights the tension between fantasy and reality, as well as the deep connection to place and memory. In the scene, Ray Kinsella (played by Kevin Costner) has just built a baseball field in the middle of his cornfield, and a character (the ghost of Shoeless Joe Jackson) steps onto the field.
The reply, "No, it's Iowa," is both grounding and ironic. Iowa, in this context, is a humble, very real place—a far cry from the mythic or idealized realm of heaven. The line serves to remind Ray and the audience that even something as ordinary as a cornfield in Iowa can hold deep, life-changing significance. It underlines the theme of the film that extraordinary things can happen in the most unexpected of places, and that the beauty of life and redemption can be found in the simplest, most everyday experiences.