Well, maybe more like 555 rows, if you include the 3 garter stitch rows at each end....
I have been plugging away at this sampler lace scarf since March. It has been my commuting project. I was listening to books on tape when I took the train to and from work while I worked it. It is Unikatissima or Lace Christmas Rose, by Susann Hajjar. I loved the way the pattern changed every 20 rows or so. And the transitions from one pattern to the other were so well conceived. I am really happy with it.
As you must know by now, I do love to block my knitting and lace knitting is the most satisfying of all. You can see the transformation above! Another thing made me happy about this project: see that tiny little ball of yarn? That is all that is left of one skein of Misti Alpaca Lace that I got on sale at Rosie's for $5. Yea!