Downtown Sun Prairie Farmers Market The Downtown Sun Prairie Farmers’ Market is a full service market held in downtown Sun Prairie at Cannery Square and Market Street. The market features local vendors that sell a variety of goods from vegetables, beef, pork, eggs, honey, flowers, plants and more! The market gives you the chance to get to know their area farmers; know your farmer, know your food! Visit the website for more information and upcoming special events coming to the markets.