I am a fit and active, well-travelled 60 year old woman who is hoping to travel solo through Wales using public transport only. I am in the very early stages of planning, as I’m seeking advice as to whether it is doable. I will be travelling in September and will have about 10-12 days to cover as much of Wales as I possibly can (I’m happy with long days). I enjoy history, scenery and pretty towns. My wish list of things/places to see includes - St Fagans History Museum, Brecon Beacons, Tintern Abbey, Hay-on-Wye, Pembrokeshire coast, Tenby, St Davids, Portmeiron, Llandudno, Pontcysyllte aqueduct, a rail journey (either Ffestiniog or Snowdonia). Have I left any must sees out??? I also have listed the following castles as the “best” to see, but know, of course, that it will be impossible to see all, so am also looking for opinions to whittle the list down to “the best of the best” and those easiest to get to - Caernarfon, Harlech, Conwy, Beaumaris, Caerphilly, Pembroke, Raglan, Carreg Cennon, Criccieth, Chepstowe. Any suggestions of places to base myself with the best transport links to get to as much of my wish list as possible is appreciated. Also advice as to which ones involve too onerous a journey would also be great.