One doesn't need to ride the whole thing. Too many towns. However, the Bear Mountain area is Jolly Good. Not too shabby from Bear Mountain to West Point, NY. Quik trip: Take the Palisades Parkway to Bear Mountain, then 9W to WestPoint. No matter what, go into the park and ride to the top. You can see new York City on a clear day.
Scenic road with lots of really nice curves, a treasure in this area.
Lots of nice views over the lakes and some nice corners, pleasant