Cadw the Welsh Assembly Goverment's historic environment service have put together a week of autumn half-term events at sites across Wales, including a guided tour of St. Davids Bishop's Palace.
Even in ruins, Bishop's Palace - unequalled anywhere else in Wales - still conveys the affluence and power of the medieval church.
You can learn more about the monument and also take a guided tour of the Palace led by the person who knows it best - the head custodian.
Walks and talks at the Palace takes place on Sunday and Wednesday, October 26 and 29, and also on Sunday, November 2, at 11.30 am and 2 pm.