According to the New York Times the center of the world isn't where you'd have expected to find it:
The town [of Felicity, California], established in 1986, consists of the Istels’ home and a half-dozen other buildings that the couple built on 2,600 acres in the middle of the desert near Yuma, Ariz., just off Interstate 8. At the north end, up an imposing staircase, sits the Church on the Hill at Felicity – inspired by a little white chapel in Brittany – that Istel built in 2007. The church is gorgeous and serene and looks eerily out of place, though less out of place than the 21-foot-tall stone-and-glass pyramid on the opposite end of town. The pyramid is there to mark the exact center of the world.
The founder of the town of Felicity, Jacques-André Istel, has led a really interesting, not to say distinctly eccentric, life.
