This interesting little building is known locally as O’Doherty’s Keep. It is located along the estuary of the Crana River in Swan Park, Buncrana co. Donegal. It’s date of construction is unknown as it resembles a fortified tower house from the 15th century but recent excavations believe it may be a corner tower of an undocumented 13th century Norman castle. In the 1400’s it came into the possession of the O’Doherty Clan who added a 3rd floor and used it as a part of their defensive network of castles around the Inishowen peninsula. In 1588, sailors from the Spanish Armada were ‘housed’ here by Sean Óg O’Doherty after being rescued after being shipwrecked in Kinnegoe Bay. In 1608 Sir Cahir O’Doherty (Sean Og’s son) lead a rising against the English garrison in Derry and the keep was burned in reprisal. In one of Harry Swan’s books on Inishowen, there is a photograph of a collection of swords, daggers and pike heads found under the keep which backs up this fact and were supposed to have been belonged to Sir Cahir. After this event, all of Inishowen including this keep was granted to Sir Arthur Chichester. Chichester then subsequently leased it to a fellow Englishman called Henry Vaughan who re-planned Buncrana and also lived here with his family until they built the nearby manor house known as Buncrana Castle in 1718. It is believed that Wolfe Tone, the leader of the 1798 Rising, was imprisoned here after his capture aboard a French Frigate in Lough Swilly before he was taken to Dublin Castle. Today the keep is roofless but is under State protection.