[3] Notable people from the community include the poet Euros Bowen, who was vicar of St Cywair's Church, which is a Grade II listed building, although it is now empty.

Llangywer has a church dedicated to St. Cywair, which is now closed;[5] a village hall which hosts the annual Sioe Llangywer; a miniature narrow gauge railway halt; and a spit of land in Bala Lake, forming a public shore and caravan camping site.

In the Middle Ages, Llangywer was one of three parishes of the commote of Uwch Tryweryn in the cantref of Penllyn.

It is a very mountainous area, with most of the habitations lying on the strip of low-lying land on the shore of Bala Lake.

[8] A nearby holy well - Ffynnon Gywair - is concealed by a stone called Llech Cywair.