From Caernarfon
On the A499, pass through the villages of Clynnog-fawr and Gyrn Goch. Just outside Gyrn Goch take the first lane on the right -- follow the sign of the black horse's head on the corner. Carry on along the lane for about ½ mile until you reach a cottage called Bron-y-Werydd on the right. Turn right here down the track (you may have to open the gate). You will find Tal Eryr at the bottom of the track.
From Pwllheli
On the A499, drive until you reach the village of Llanarlhaearn. A little further along the A499 you will pass two turnings to the village of Trefor. Take the first left after the second of these turnings. There is a sign of a black horse's head on the corner by the lane, follow the sign and and drive for about ½ mile until you reach the third turning on the left. Take the left turn next to a cottage called Bron-y-Werydd. You may have to open the gate and make your way down the drive to Tal Eryr.