Eleven of the building's twelve mantelpieces are original. He is known primarily for his interior decorations for mantelpieces, overdoors, etc. Brick fireplaces with timber mantelpieces serve six of these rooms. A hidden compartment over one of the mantelpieces was uncovered during the renovations in 2005. The mansion contains 64 different mantelpieces, which were in part the work of Robert Adam. The upstairs rooms have raked ceilings, and contain fireplaces with timber and marble mantelpieces. Lang first found work in Boston carving elaborate mantelpieces for Back Bay families. The bedrooms have their original wooden trim, but no mantelpieces. The public downstairs rooms feature similar woodwork, with elaborate mantelpieces. The Met purchased the unique musicians gallery, cornice, door frames, and mantelpieces from the ballroom. Similar precautions had been taken to protect the marble mantelpieces and stained glass windows. Oram's works were often applied to decorative purposes and inserted over doors and mantelpieces. Two mantelpieces from the City Hotel dining rooms and the exterior doorway were also sold. The mantelpieces are very rich and were specially imported. Crystal chandeliers, stone mantelpieces and typical turn-of-the-century furniture gave the rooms a homey ambiance.