Time Out says
Dobroyd Head's preferred vantage point
Located in Sydney Harbour National Park, this spot boasts expansive views across the ocean toward New Zealand and is a prime location for spotting humpbacks and right whales during their seasonal migrations. Arabanoo Lookout is a spectacular point for views over North Head, South Head and the Pacific Ocean with historical significance. Don’t ignore the plaques, monuments, aboriginal rock engravings or the Grotto Point Lighthouse while you’re in the area. Arabanoo Lookout is only a short detour off the popular Spit Bridge to Manly walking path.