1) William B. Pond area has beavers (gigantic ones!), gigantic turtles, and deer. I saw all these in about a half hour during one visit without trying.
2) There's a mystery rock artist at the Watt Avenue access who...does things with rocks. I saw one of these during a run and didn't think anything of it. Now that I know it's an ongoing tradition I'm more intrigued. Should that make a difference in my appreciation? Ih, who knows. Still interesting.
3) There's a pedestrian bridge which is a mock-up of the Golden Gate. (Going across at Sac State campus.)
4) Once you're up as far as Lake Natomas in Folsom it looks more like the foothills, with actual cliffs in a few places.