Governor's House, St Andrew's House, Regent Road, Edinburgh

The Governor's House, also known as St Andrew's House, is a two-storey, castellated building designed by Archibald Elliot in 1815. It features an irregular plan and was formerly the residence of the Governor of Calton Jail. The house is dramatically positioned on the steep rocky slopes of Calton Hill, overlooking the Waverley valley to the south. It is constructed from coursed and squared rubble with tooled margins, and includes a base course, string courses, and corbelled and crenellated parapets. The windows are predominantly round-arched, with some segmental-arched openings on the ground floor, and the towers have narrow round-arch window openings.

The building has a variety of timber sash and case windows with different glazing patterns, including some with 4 over 2-pane, 5 over 4-pane, and 9 over 6-pane configurations. The roof is covered with grey slates and lead flashings, and there is a wallhead stack with polygonal cans, along with cast-iron rainwater goods.

Inside, as seen in 2007, the house has been comprehensively modernised but retains a tight, open spiral staircase with stone treads and a timber and iron balustrade. The curtain walls to the east and west of the house are tall, battered, and coped rubble walls, interspersed with castellated turrets, built to follow the undulations of the hillside.