Bangor lies on the coast of north Wales near the Menai Strait which separates the island of Anglesey from Gwynedd. Bangor Mountain lies to the east of the main part of the city, but the large housing estate of Maesgeirchen, originally built as council housing, is to the east of the mountain near Port Penrhyn. Bangor Mountain casts a shadow across the High Street, Glan Adda and Hirael areas, so that from November to March some parts of the High Street in particular receive no direct sunlight. Another ridge rises to the north of the High Street, dividing the city centre from the south shore of the Menai Strait; this area is known as Upper Bangor (Bangor Uchaf).
Bangor has two rivers within its boundaries. The River Adda is a largely culverted watercourse which only appears above ground at its western extremities near the Faenol estate, whilst the River Cegin enters Port Penrhyn at the eastern edge of the city. Port Penrhyn was an important port in the 19th century, exporting the slates produced at the Penrhyn Quarry.
Bangor lies at the western end of the North Wales Path, a 60 mile long-distance coastal walking route to Prestatyn. It is also on routes 5, 8 and 85 of the National Cycle Network.
penrhyndeudraeth