Castle Rock Beach is a tiny, tucked-away spot just around the corner from Clontarf Beach, best known for the massive rock that sits dramatically in the middle of the sand. This natural feature creates a striking focal point and offers stunning views of the surrounding water and coastline. Its small size and unique character make it a favourite among locals seeking a quiet, scenic escape.

Access is via a short walk down stairs from Ogilvy Road or Duke of Edinburgh Parade, with parking limited nearby. On sunny days, the water sparkles in vivid blues and greens, making it perfect for a refreshing swim. Despite its size, the beach offers a sense of seclusion and natural beauty that larger beaches often lack.

Castle Rock Beach has no facilities, so visitors should come prepared. Its intimate size can mean it feels crowded during peak summer days, but the combination of calm waters, dramatic rock formations, and peaceful surroundings makes it a special Northern Beaches gem for swimmers, photographers, and anyone wanting a quieter beach experience.