Climb up to new door - lever lowers th edrawbridge. There's a second sword here too if you lost yours. GO down and across the drawbridge. On left push block to jut out spot, climb up jump over rope-holder and cut rope. It lowers down to the lower area. Now go down through door to north, around and down into grave room. Go to the main gate and save.

Now go to the rope. Climb up to the 2nd window. Go in and push the block down and go down the ladder after it. Now push it out the window. Call to her, she'll jump up. Go up tot he idols, through the door to the waterfall.

The Ico Walkthrough

Please swing by my Forum to ask me how to get through if you're stuck somewhere I haven't put up yet. I'll get back to you quickly.