On St David's Day, entry to 13 of Cadw's properties will be free. Those historic monuments participating are Beaumaris Castle, Caernarfon Castle, Castell Coch, Conwy Castle, Harlech Castle, Caerleon Roman Fortress Baths, Caerphilly Castle, Chepstow Castle, Raglan Castle, Tintern Abbey, Kidwelly Castle and St David's Bishop's Palace. Tretower Court and Castle near Brecon re-opens for business after the winter shutdown on March 1st