[3] The current castle is the result of work carried out in the early 17th century by Sir Roderick Mackenzie, the ancestor of the Earl of Cromartie.
A compact L-Plan tower house, built of red sandstone, forms the earliest part of the castle, and may be based on a 15th-century building.
[4] An additional section was later added in the re-entrant angle, making the castle square in plan, and accommodating a larger staircase and extra bedrooms.
The grounds include two Spanish chestnuts, said to have been planted by John of Killin in 1556, to mark the confirmation of his acquisition of Castle Leod by Mary Queen of Scots.
This may be surprising to viewers who know Castle Leod as the seat of the Clan Mackenzie and accurately represents the historical period which Diana Gabaldon seeks to portray.
Diana Gabaldon told STV that "When the TV show began scouting locations, I suggested Leod as a possibility.
It's entirely accurate as to period, of course, and has magnificent grounds, with a park of enormous, exotic trees planted by centuries of MacKenzies and their visitors.