the site of the quarry, the Federation Cascades built in 2001 to commemorate the centenary of the federation of Australia, and the primitive plant section, with examples of plant species that have survived for millions of years. The garden is open from 8am to 5pm every day except Christmas Day, and admission is free. Dee Why Beach Dee Why Beach runs for about 1.2 km along the eastern border, overlooking the Tasman Sea. To the north are the dunes separating the beach from the Dee Why Lagoon. At its southern end is the Ted Jackson Reserve (renamed from Dee Why Beach Reserve in October 2010), with picnic areas and century old Norfolk Island Pines, similar to the ones in Manly. The reserve is contained by a seawall running for approximately 400m, and was upgraded in 2006, with new pathways, stairs, lookout platforms, an upper promenade and the restoration of the war memorial. There are two playgrounds in the vicinity, located at the southern end of the beach and west of the Dee Why Surf Life Saving Club, near to the lagoon, and several ocean pools located below cliffs to the south. Car parking facilities exist in the streets to the south, as well as a car park next to the Life Saving Club. Dee Why Lagoon Behind the beach's remaining dunes, to the north of The Strand, is Dee Why Lagoon. Its entrance marks the northern end of Dee Why Beach and the southern extent of Long Reef Beach. The high conservation value of the lagoon and its surrounding area was recognised in 1973 when it was proclaimed a wildlife refuge. It is an extremely significant area for local and migratory birds, and is listed on migratory bird agreements with Japan and China. The Dee Why Lagoon Wildlife Refuge covers an area of 77 hectares, of which the lagoon takes up 30 hectares. The rest of the reserve is primarily swamp-based bushland, as well as the coastal dune ecosystem between the lagoon and the sea. It is a major scenic feature of the Northern Beaches, situated off Pittwater Road, and accessible from Dee Why Parade and The Strand. Commercial areas The main commercial area in Dee Why is centred on either side of Pittwater Road, the main arterial road on the Northern Beaches, and continues down the streets leading to the beach as well as upwards along Fisher Road. This