Three Cliffs Bay is one of the most picturesque and photographed bays on Gower. The beach is wide, sandy and backed by dunes, high limestone cliffs and a small pebble bank. The Pennard Pill snakes its way across the beach and the coastal path crosses this by means of stepping stones. Swimming is generally safe with two main exceptions: in the vicinity of Pennard Pill on an ebbing tide (especially when the tide is out past the headland) and also in surf conditions. Lifeguards patrol end of May to early September (10am - 6pm) during weekends and school holidays only. It's a good choice for a day out, and there's plenty to explore.
The closest parking is at Penmaen or Southgate. At Penmaen there is (free) parking either in a small lay-by on the south side of the road, or on Cefn Bryn common on the north side (just across the cattle grid). Public footpaths lead from here to Three Cliffs and Tor Bay. Alternatively, at Southgate there is a car park (attended / P&D) on the cliffs from where the coastal path can be followed (about ¾mile) to the beach. Dogs are allowed at all times.
Just inland on the eastern side are the ruins of Pennard Castle.