The ruins of a school are the only remnant of which ghost town in North Dakota? It was named after a French-Canadian explorer, who was believed to be the first white man to see the prairies there.

Pierre La Verendrye is thought to be the first European explorer of the North Dakota territory in 1738. The town was named Verendrye after the fur trapper with the Falsen school being the only structure still surviving today. The town was never large, but when the trains changed to diesel, the trains no longer needed to stop to refuel. From this time the town continued to lose population with the last resident moving away in 1970.

https://ghostsofnorthdakota.com/2010/05/17/falsen-school/