Take time to stop and gaze across the stream towards the undoubted gem of Pembroke Castle - and, indeed, of Pembroke itself - the superb Round Keep, built by Earl William Marshall in about 1200.

Beneath Pembroke Castle, a cave is being excavated by archaeologists looking for clues to Wales' prehistoric past. Reindeer and mammoth remains were among the Ice Age artefacts unearthed in Wogan ...