I came in to say caryatid but after seeing your photo I don't think that applies, since those don't seem structural.
So I will leave that dangling for some thread-entering architect to correct. posted by rokusan at 1:46 PM on December 1, 2009
Yep, modified herms.
Original Greek herms functioned as boundary markers, and were shorter, stouter, and had large erect phalloi. ~*~The more you know!~*~ posted by oinopaponton at 1:51 PM on December 1, 2009
(here's a vase painting of a more typical Greek-style herm) posted by oinopaponton at 1:52 PM on December 1, 2009
I don't know how other folks would have gone about it, but
posted by Carol Anne at 1:32 PM on December 1, 2009