Went to visit Andy Goldsworthy's curvy wall in Stanford California a couple of years ago. It was hard to find. This is because its below ground level. You can walk and scan the Stanford University campus grounds and never see it. You can ask people and they won't know. But when you find it , it's like discovering a hidden source of water - a dry stone river bed.
It starts out like dragon scales just barely visible sticking out of the ground and then it morphs into the winding tail and huge sinuous torso of a long thin dry stone snake. It is was built from salvaged stone from a historic building that was taken down not far from the place where this amazing installation is situated. It invites you to get lost in it's curves.
It is not as famous as the 'Wall' at Storm King but it deserves to be up there with Andy's best works. It was built sometime before that wall and I'm guessing the learning curve was still pretty steep for all those involved in helping Andy build it.