It lies in the Tanat Valley approximately five miles from the small town of Llanfyllin and ten miles from the Shropshire market town of Oswestry. The Berwyn mountain range is nearby, as is Pistyll Rhaeadr waterfall. The ruins of Owain Glyndŵr's Sycharth castle lie a few miles outside the village towards Llansilin.
The Llangedywn Church In Wales Primary School is located in the village.
Sir Watkin Williams-Wynn, 10th Baronet, heir of Owain Gwynedd, lived his final years at Llangedwyn Hall.
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