Take Roche Harbor Road north several miles from the ferry dock, pass the vineyard, and you will easily find the sculpture park. This is a great place for family, lovers, or Number One. You don't need the aid of the plastic coated maps provided--just wander! There is a large open area with contours, a lake, trees, and bushes, but go beyond to the woods and tidal areas where there are sculptures to be found in the oddest places.
Discover what art appeals to you most and then think about why that is. Find the sacred spinning prayer urns and make use of the drawer with paper and pens for articulating your dreams. There is a studio on the premises where an artist might be working. There is much more to do here than just hike, but whoever thinks that anyway!
When I first arrived I got side tracked by the private airport (not open to the public) right next to the park as well as Hotel Haro's gardens and kilns a couple miles beyond. Near the upscale Roche Harbor complex there are trails among old limestone quarries. The geologist in you might find these briefly of interest. I explored the trails for 20-30 minutes and decided that it was a rather creepy and ugly area to hike. Make sure you've hiked all of the sculpture park area first before going here to find several cesspools though many darling dragon flies.