Plas Tan y Bwlch (grid reference SH655406) in Gwynedd, Wales is the Snowdonia National Park environmental studies centre, administered by the National Park Authority.
The centre aims to provide courses which are of interest to all lovers of the countryside who would like to know about the Snowdonia National Park and the part of Wales in which it resides.
Plas Tan y Bwlch occupies a position overlooking the valley of the River Dwyryd, and the village of Maentwrog, with no part of the Park more than an hour’s drive away.
Plas Tan y Bwlch was built by the rich Oakeley family during the 19th century, it being substantially rebuilt on the site of a first house probably built in the early 17th century. Additions designed by the Chester architect John Douglas were made to the house for W. E. Oakley in 1872.
The Oakeley family owned a huge slate quarry in Blaenau Ffestiniog. Slates were carried from the quarry to Porthmadog by means of the Ffestiniog Railway which passed through the estate.
The Tan-y-Bwlch area includes nearby Llyn Mair and Tan-y-Bwlch railway station.