Lachlan Castle is a ruined 13th century castle on Loch Fyne

Loch Fyne

Loch Fyne is a sea loch on the west coast of Argyll and Bute, Scotland. It extends inland from the Sound of Bute, making it the longest of the sea lochs...

, Scotland

Scotland

Scotland is a country that is part of the United Kingdom. Occupying the northern third of the island of Great Britain, it shares a border with England to the south and is bounded by the North Sea to the east, the Atlantic Ocean to the north and west, and the North Channel and Irish Sea to the...

. It was the stronghold of Clan MacLachlan

Clan MacLachlan

Clan Maclachlan, also known as Clan Lachlan, is a Highland Scottish clan that historically centred on the lands of Strathlachlan on Loch Fyne, Argyll on the west coast of Scotland...

 until 1746 when it was attacked by British Government forces. "New" Lachlan Castle

Lachlan Castle

Lachlan Castle is a ruined 13th century castle on Loch Fyne, Scotland. It was the stronghold of Clan MacLachlan until 1746 when it was attacked by British Government forces...

 was built as a replacement in 1790, around 1 kilometre (0.621372736649807 mi) to the north-east.

It is protected as a category A listed building, and as a scheduled monument.