Except for a few location shots in Boston, much of the film "Field Of Dreams" was shot in Dubuque County, Iowa and nearby in Illinois. The home (at the time a private residence) and field were on adjoining farms near Dyersville, Iowa. For the final scene, the entire town of Dyersville was "blacked out" as part of a community event that also involved commuters driving to the field. The drivers in the final shot were instructed to switch between their high beams and low beams to allow for the illusion of movement.
The "Field" was maintained by the land's original owner, Don Lansing, as a tourist destination. He did not charge for admission or parking, and derived revenue solely from the souvenir shop. The attraction drew about 65,000 people annually.