Milnholm Fish Hatchery

Milnholm Fish Hatchery, built in 1881, is a brown trout and salmon hatchery that was purpose-built for Sir James Maitland. The building is two stories tall and has a roughly rectangular shape with stepped east and west elevations. It is constructed from yellow brick, featuring ashlar window surrounds and quoins. The upper three courses of the wallhead are raised brickwork with a chamfered base, topped with slightly overhanging ashlar coping. The roof is flat, made from concrete and asphalt, and the wallhead steps down from north to south, following the slope of the land.

The entrance is located on the west side and is accessed via a footbridge. It features a roll-moulded, architraved ashlar door surround. The east and west elevations have regular fenestration with fixed windows that include chamfered stone mullions, and some windows are glazed with wire mesh. To the left of the door, there is a single four-pane timber sash and case window with a datestone above. The south side has three window-less bays divided by pilaster strips, and there is a modern extension to the north.

Inside, the entrance door opens onto a landing with a doorway leading to the upper floor, which has a white glazed tile door surround, a detail also found on the lower floor and at Howietoun Fishery. To the left is an open well stone stair with decorative cast iron balusters painted green and a timber handrail. The moulded ashlar pilaster newel hints at a classical design, and there are ashlar pilasters in the corners of the stairwell on both floors. Both floors slope downhill from north to south, following the land's gradient. The entire upper floor is occupied by fibreglass fish tanks, except for a small office room in the northeast corner, which is now used for storage and features a moulded ashlar fire surround and plastered walls. There is also a fireplace in the small office room directly below. The lower floor contains two large rooms with larger plastic fish tanks. Both floors are supported by cast iron columns and beams, and the walls are covered in glazed white tiles divided by ashlar pilaster strips. The upper floor has a concrete floor, while the lower floor retains remnants of original black and red tiles. Some original pipework, including lead pipes boxed in timber, remains, but no original wooden tanks survive.