1. The Cozy Dog Drive-In, Illinois

Since 1946, The Cozy Dog Drive-In has been a beloved Springfield landmark, famed as the birthplace of the original corn dog. Stepping inside feels like traveling back in time—retro booths, walls lined with memorabilia, and a neon sign glowing out front set the scene. Still owned by the founding family, this Route 66 classic delivers nostalgia with every bite, making it a must-stop for anyone longing to taste authentic Americana along the Mother Road.