Inch Island off the Inishowen Peninsula, Co Donegal in the northwest of Ireland is a Discovery Point on the Wild Atlantic Way. It is a unique island in Lough Swilly and connected to the mainland by two slim man made causeway embankments built by the Londonderry & Lough Swilly Railway in the 1850s.
It is now a birdwatchers paradise and is of international importance because of the number of birds such as Whooper Swan, Greenland White Fronted Goose and Greylag Goose. In the autumn swans make their landfall in Inch on their return from their Icelandic breeding grounds. There are a number of great viewing points for these birds on the island and also some nearby attractions such as Scalp Mountain and Greenan Mountain with its stone fort of Grianán of Aileach, the Temple of the Sun, built by the O'Neill clan in the 6th or 7th century. On inch Island itself is Inch Castle, built by the O'Doherty Clan of Inishowen in 1454 and worth a visit.