Although not technically a beach, it's so stunning you would clearly miss out if you forego this amazing place. You will encounter an astonishing range of ridges in hues of red, white and yellow, making their way down to the ocean to create one of the most important archaeological and geological locations in South Australia. To reach Hallet Cove, you can take a train to Hallet Cove Conservation Park. From there, a 5 km hike from Hallet Cove to Seacliff will take you across all the beautiful scenery, after which, you can take the train to the city or go on a scenic coastal walk passing Brighton to Glenelg.