From the March 2014, Our State magazine by Alan Hodge.
This was actually a quiz I took and I got 7 of 9 correct, mostly on some mighty good guessing.
1. In Winston-Salem there is a former Shell gas station shaped like a cockleshell.
2. The Futuro House near Frisco on the Outer Banks is shaped like a flying saucer.
3. Garinger High School original library had a conical shape in Charlotte.
4. The "Strangest Home in America," Korner's Folly is eccentric architecture in Kernersville.