We had a day trip to see this interesting lighthouse.

Located 33 kilometres north-east of Taree, the historic Crowdy Head Lighthouse was built 1878-1879 and is one of five small lighthouses built on the NSW coast, with panoramic views from the lighthouse reserve. Looking north you can see beyond Diamond Head and the Three Brothers mountains (south, middle and north), which were named by Captain James Cook in 1770 as he sailed up the east coast. Unbeknown to him, the Biripi Nation had been calling them the Three Brothers for millennia. To the south you can see as far as Seal Rocks.
visitnsw.com