- Gaer Farm B - welcome to our guest house accommodation in near Llandrindod Wells in Mid Wales. Set in a beautiful rural location, we're close to Llandrindod Wells, Builth Wells, Rhayader, Brecon and Hay-on-Wye. The Gaer is a working farm, so you can meet the animals and find out what rural life is about.www.gaerfarm.co.uk