Elcho Castle () is located close to the south bank of the River Tay approximately four miles south-east of Perth, Scotland, in the region of Perth and Kinross. It was maintained by Clan Wemyss from its construction around 1560 until it was put into the care of the Secretary of State for Scotland in the early 20th century, though was not occupied for the entire time. In around 1830 it was re-roofed and a nearby cottage constructed. The castle has been a scheduled monument since 1920 on the grounds of being "a particularly fine example of a Medieval tower-house", and the cottage became a listed building in 1971 in recognition of its national importance. The castle is unusual in that it has both en suite guest accommodation like a mansion, but also a large number of gun loops. Description Elcho Castle consists of an approximately Z-plan tower house, with evidence of a surrounding wall (a barmkin). It is a multi-storied structure with a large square tower at once corner, and three other integrated towers on the north-side. Some of the windows have metal grilles for defence, and 17 gun loops are present at the lower level. There is only a single entrance to the castle, located at ground-level in the south-west tower, and is protected by a yett. There is a walk-way on top of the walls, with a parapet, though as with the south-eastern corbelled turret featuring large windows, it was thought to be more for inhabitants to view the surrounds than the defence. The castle was built with stone rubble and dressed sandstone. The walls would have been harled, but only small patches have survived. One of the dormer windows on the south side features an annulet (sometimes used as a cadency to represent a fifth son). The first floor (known as the "noble floor") primarily consists of the main hall, which was lit by south-facing windows, and great bedchamber which also acted as a private reception room with a small side room and en suite latrine. The upper floors were large for the time, and included multiple smaller rooms with roof-top walkways. It also includes a "guest wing" with their own latrines, which is unusual. There is a large turnpike staircase to the first floor, with additional staircases to the upper floors. The ground floor (known as "below stairs") was vaulted, with a large kitchen, fireplace, and