Duntrune Castle is located on the north side of Loch Crinan and across from the village of Crinan in Argyll and Bute, west of Scotland.

It is thought to be the oldest continuously occupied castle on mainland Scotland.

[2] It was originally built by the MacDougall clan in the 13th century, along with several other castles in the area, including the MacDougall stronghold of Dunollie Castle near Oban.

In the 17th century the castle was besieged by the rival MacDonalds, under Alasdair Mac Colla.

[2] The gateposts of Skyfall lodge, James Bond's childhood home in the film of the same name, were modelled after those at Duntrune.