Avant's Cities Service Station is a small, well-preserved late-1920s filling station on South Choctaw Avenue in central El Reno. It is no longer a working garage — it is open as a historic site and Route 66 photo stop — but the structure, signage, and one of the original gravity-feed pumps are still in place.
Together with Jackson Conoco a block away, it is one of two early-twentieth-century stations in town, both on the National Register. Either one is a five-minute stop on a downtown walk between burger lunch and the railway museum.