This struck me as just about the oddest looking trailhead I’ve ever seen. Looks like a lawn to me. However, you’re allowed to walk across the lawn in downtown Coulee Dam to Candy Point Trail where you can then hike up through a small canyon to epic views of the damn from Crown Point Vista. Fun (but short) hike if you are ever in the neighborhood.
FYI, here’s the view at the other end of the trail: