Driving north of Auckland on state highway 1, take the turnoff at Warkworth for Matakana then take the turnoff to Sandspit, Snells Beach and Algies Bay. Drive past or through these locations and watch for the Scotts Landing sign on your right after you have driven through Algies Bay.
Right at the end of Ridge road you will find a quiet sanctuary, a little jetty which quite often has someone fishing off it, a bit go history is there as well. walk around the path and start exploring.
The beach is great for swimming at high tide especially when it is blowing an easterly, warning though this is a Oyster coast, so bring your candles, and swimming shoes if a few hrs after hi tide.