Oxbow Public Market in Napa, Calif., opened in 2007 and was designed to blend in with the surrounding architecture. Courtesy of the Project for Public Spaces hide caption
On a corner in Washington, D.C., where stores burned during riots 44 years ago, there's now a plaza where farmers sell produce on Saturday mornings. Dan Charles/NPR hide caption
Georgia O'Neal harvests winter greens at the Tree and Leaf Farm in Unionville, Va., on March 16, 2011. Maggie Starbard/NPR hide caption
Desmond Brown sells fruits and vegetables at a farmer's market outside the Alabama Capitol in Montgomery, Ala. Dave Martin/AP hide caption
The regular old supermarket is still king for choice, price and convenience
Bart Sadowski/iStockphoto.com hide caption