Portencross Castle, thought to date from the 14th century, is situated right next to the sea at Portencross harbour. It is L-shaped and four storeys high, with a barrel-vaulted ceiling. The castle was roofless for many years due to storm damage. A campaign to save Portencross Castle from private ownership received national publicity in July 2004 when it was featured on the BBC's "Restoration" television programme. The title for the castle and grounds was given to the group "Friends of Portencross Castle" on 22 December 2005.