Mae gogoniant mwyaf Tyndyrn, sef yr Eglwys Gothig, wedi sefyll ar lannau Afon Gwy ers dros 700 mlynedd. Dros y canrifoedd, mae'r tywydd wedi erydu'r gwaith cerrig canoloesol meddal ac mae prosiect cadwraeth ar raddfa fawr bellach yn mynd rhagddo i ddiogelu'r heneb a sicrhau ei bod yn ddiogel i ymwelwyr.
Tintern’s greatest glory, the Gothic Church, has stood on the banks of the River Wye for over 700 years. Over the centuries, the weather has eroded the soft medieval stonework and a large-scale conservation project is now underway to preserve the monument and make it safe for visitors.