The article lists 16 of the most unusual gas stations in the US, some of which no longer sell gas but have been converted into businesses or preserved as historic monuments. The Hollow Mountain gas station in Hanksville, Utah, was built in a rock cavern and converted into a convenience store. The Sinclair station in Snyder, Texas, was saved by its current owner, Lynn Fuller, more than three decades after it shuttered. The Shell station in North Carolina, which features Shell-shaped stores alongside color-coordinated gas pumps, was added to the National Register of Historic Places in the 1930s. The Provine Service Station in Oklahoma was built on Route 66 in 1929 and has since evolved into a tourist attraction.