Kiama Harbour forms one of several coves between headlands. Most of the coastline is sandy, with rocky headlands at intervals. Natural habitat types include dunes, pannes, coastal headlands and grasslands. Headlands and bays are often found on the same coastline. Two protective sandy headlands protect the harbor and form a sandbank. Natural harbours are formed by such barriers as headlands or reefs. These values are derived from the expanse of uninterrupted cliff face and vegetated headlands. The estuary opens to the ocean after passing between two large headlands. There are other rock formations on these cliff headlands of moderate renown. Other historic landmarks in the Headlands include Point Bonita Lighthouse. Botany Bay National Park is located on the northern and southern headlands of the bay. Visible to the north are the Golden Gate Bridge, the Marin Headlands, and Alcatraz Island. Many of their sites were on exposed headlands and outer islands. As the ship sailed into the harbour, they noticed Aborigines on both of the headlands. There is also a telescope on the headlands which overlooks Peel promenade.