Saddell Castle was built by David Hamilton, Bishop of Argyll, between 1508 and 1512 from the stones of the ruined Saddell Abbey. The castle was gifted to James Hamilton, 2nd Earl of Arran by Bishop James Hamilton, as payment of debts and taxes in 1556. The Earl of Arran exchanged it with the Chief of Clan MacDonald of Dunnyveg, James MacDonald in exchange for James's lands on the Isle of Arran. The castle was ransacked and burnt in 1558 by Thomas Radclyffe, 3rd Earl of Sussex, Lord Deputy of Ireland under orders of Queen Mary I of England in retaliation of James's involvement in Ireland against the English. The castle was later rebuilt and enlarged together with a trap door in the main entrance passage, which upon activation, sent unwanted visitors into a dungeon which had no exits. In 1607, the Clan Donald lands in Kintyre, including Saddell, were conveyed by King James VI to Archibald Campbell, 7th Earl of Argyll. The castle fell into disrepair when Saddell House was built c. 1774. The castle was bought and restored by the Landmark Trust, which now rents it out as a self-catering property.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.