Port Wakefield is a small town at the head of Gulf St Vincent, just far enough from Adelaide to feel like the country has opened up. Most people know it as the highway stop where traffic splits for Yorke Peninsula, Port Augusta, and the north. That is true, but the older town behind the roadhouses has more character than a quick fuel stop suggests.
The best visit is slow and simple. Follow the historical walk past the old port buildings and stories of copper, grain, tramways, and coastal trade. Then go down to the tidal pool, where a sluice gate turned the river mouth into a saltwater swimming spot.
The stronger reason to linger is the Samphire Coast. The mangroves and samphire flats around Clinton Conservation Park are good for shorebirds and for seeing the northern gulf as something more subtle than a line on the map.
Port Wakefield is not worth a special trip from far away. It is worth stepping off the highway for if you are already moving between Adelaide, Yorke Peninsula, and the upper gulf.