Theatre at Craig-y-nos

Attached to NW side of main house and adjoining the clock tower, its frontage forming the N side of the main entrance courtyard. The theatre frontage is, like much of the Patti extensions, of contrasting coursed red sandstone and pale ashlar dressings, with slate roof incorporating a glazed and louvred ventilator. Facade has pilasters with triglyph frieze, cornice and pierced parapet, small central doorway with pediment. To right over the full height remodelled main entrance doorway and window is a raised stucco panel depicting cherubs, swags and musical trophies with decorative side pilasters supporting a small pediment surmounted by a figure holding a tambourine. To the side the masonry is coarser, snecked rockfaced sandstone, pale lower courses, yellow brick dressings, part rendered. Tall fly tower has hipped roof with separate ventilator; access for scenery and workshops below; windows have cambered heads.

Outstanding decorative interior, with fine plasterwork moulding, painted in pastel green and peach and gilded. Auditorium of 4 bays with part-fluted part-decorative Corinthian columns; in between are painted panels with opera composers' names at base above a dado incorporating ornamental heating grilles between column plinths; side swing doors; above is a continuous frieze also incorporating names of opera composers; cornice supports wide volute brackets dividing coved painted ceiling panels with the main central section incorporating decorative plasterwork flanking the rooflight. Proscenium arch is flanked by twin Corinthian columns on a deep plinth; these support a swagged entablature with 'Rossini' the central name of the frieze; at the centre rises an open pediment enriched with reclining figures and cresting with central cartouche incorporating the initials ANP representing Adelina (and) Nicolini Patti. The stage has an original curtain drop depicting Madame Patti as Semirade and side hangings of garden scenery. The floor, kept horizontal, can be raked for audience seating and to provide an orchestra pit with balustrade, the original machinery still in working order - as are the ropes, weights and pulleys controlling the scenery in the flies, the trap doors under the stage, the foot and stage lights and the heating system. To the rear, part of the main building complex, are suites of dressing rooms, some retaining fireplaces.