The best public sculpture is something that doesn't blend into the background of everyday life. No matter how many times--every day, once a week, once a year--that it's seen, it never ceases to attract attention. Meet "Harrow," a steel sculpture in Lubben Plaza Park. It always amazes us. A giant rust-brown cone that resembles a household screw enlarged to the size of a child revolves around a sand-covered track, making a complete circle once a day and creating rings in the sand. Artist Linnea Glatt designed it to move slowly and effortlessly, so you never actually see it making its revolution. But pass by it a few hours later, and you'll notice its progress and the concentric circles. And you'll keep noticing it.@choice:Pegasus - Atop the Magnolia Hotel 1401 Commerce St.