The interior of the early 16th-century DoeCastle isn’t open to the public, but locals open the gates each day, allowing you to wander through the grounds. The castle was the stronghold of the Scottish MacSweeney family until it fell into English hands in the 17th century. The castle is picturesquely sited on a low promontory with water on three sides and a moat hewn out of the rock on the landward side. The best view is from the Carrigart–Creeslough road. It’s signposted 16km from Dunfanaghy on the Carrigart road.