The Gatehouse Lodge including Gatepiers, Gates and Boundary Walls, and excluding later additions to south of Gatehouse, The Royal Observatory, Observatory Road, Edinburgh

The Gatehouse Lodge, including gatepiers, gates, and boundary walls, is located at The Royal Observatory on Observatory Road in Edinburgh. Designed by W W Robertson of HM Office of Works between 1892 and 1894, this gate lodge is a single and two-storey structure made of cream sandstone and coursed rubble. It was built as part of a group of buildings for the Royal Observatory on Blackford Hill. Notably, all later additions to the south of the gatehouse lodge are excluded from the listing.

The north elevation, which serves as the entrance, features a central doorway with a two-leaf panelled door, a plate glass fanlight, and a cornice with a pediment adorned with foliate detail. To the outer left, there is an advanced bipartite window in the gabled bay, along with a single window above it on the first floor. The windows are timber sash and case with plate glass. The roofs are pitched and piended, covered in grey slate, and have coped wallhead stacks.

The interior of the lodge was modernized in 2015 to create office space.

Adjoining the lodge to the north is a pedestrian gateway with a lugged architrave, cornice, and a panel carved with "Royal Observatory," complemented by an ornately decorated wrought iron gate. The gatepiers are banded and topped with cast iron lamps and carved heraldic panels inscribed with "VR," featuring a dentilled cornice and pedimental caps. The lamp standards are decorated with a foliate pattern and crown finials, while the pair of wrought iron gates are highly decorative and bear the initials "RO."

Surrounding the Observatory and all outbuildings is a high coped rubble boundary wall, which includes cast iron railings along the northern boundary.