Gwydyr House (Welsh Office)

Gwydyr House, also known as the Welsh Office, is a town mansion built around 1772, possibly by Thomas Lunton, with some attribution to John Marquand. An attic storey was added in 1886. The building is constructed of brown brick with minimal stone dressings and features a well-proportioned, plain, astylar Palladian facade. It stands three storeys tall with an attic and a basement, and is five windows wide.

The central entrance is approached by steps and features a panelled door with sidelights set within a tripartite frame of engaged Roman Doric columns, which support an entablature. Above this is a Venetian window with Ionic columns and balustrading below the sill, creating a prominent stone-dressed centerpiece. The windows have recessed glazing bar sashes under flat gauged arches, and there are plat bands at the ground and first floors. A modillion cornice adorns the second floor, with a cornice and blocking course at the attic level. The exterior is complemented by wrought iron railings with link extinguishers and a wrought iron scrollwork overthrow lampholder.

Inside, Gwydyr House retains several original features, including plasterwork, doorcases, fine statuary marble chimneypieces, and a stone geometrical staircase with a delicate wrought iron balustrade.