Perhaps the smallest castle in Scotland, this curious little ruin occupies a high position above the Pass of Birnam, the traditional entry into the Highlands.

Best visited out of high summer due to the bracken, you can find this on a short spur off the main Birnam Hill path, starting from the quarry car park just off the Bankfoot Road.

This is a tiny 16th century Z plan castle, which until the 1970s was only two or three feet high, until a local resident took it upon himself to partially rebuild the walls!