"Ahu" are stone platforms on which many moai sit. There are 313 known ahu and 125 of these carry moai. The biggest, Ahu Tongariki is 220 m (720 ft), and had the most (15) and tallest moai.
I travel the world, and I'm happy to say that America is still the great melting pot - maybe a chunky stew rather than a melting pot at this point, but you know what I mean.