Reconstruction drawing by artist Falcon Hildred showing the interior of Gorllwyn Uchaf as it might have looked when first built, including the dais partition with three doorways and the cruck trusses, each with a morticed collar.
Gorllwyn Ucha is an early hall-house situated on the edge of the Snowdonia National Park. Because of its historical features, the house was first surveyed in 1953 and, in 2009, the Dating Old Welsh Houses community project commissioned tree-ring dating which dated the timbers to 1533. It belongs to a group of houses which are between hall houses and classic Snowdonian houses.