Solva Harbour is a ria, a river valley drowned by the sea, and it winds for half a mile between steep green slopes from Lower Solva to the open water of St Brides Bay. The rocks at its mouth made it one of the most sheltered anchorages on this coast, and it was once the main port of the bay. The preserved lime kilns on the harbour edge are a reminder of when ships brought in limestone to burn for fertiliser.
At low tide most of the harbour dries out and boats sit on the sand. The national park's short Solva Harbour walk (0.8 miles) loops from the car park along the water and back through the village.