There's no shortage of lookouts at South Head. The Gap offers some of Sydney's finest views and good opportunities for whale watching. South Head is also great for a swim, try Camp Cove or Lady Bay Beach.
Arabanoo lookout at Dobroyd Head is named in honour of Arabanoo, the first Aboriginal man to live among European settlers. It's a great spot for whale watching, offering views over North and South Head and the Pacific Ocean.
The easy Hermitage Foreshore walk is one of Sydney's great coastal walks. Start at Nielsen Park and take in the views of Shark Island, the Sydney Harbour Bridge and the grounds of Strickland House along the way.
Fort Denison is a heritage fort on a Sydney Harbour island, once called Pinchgut. This former military site is the most complete Martello Tower in the world and a popular Sydney attraction. Fort Denison is currently closed for maintenance and conservation works.