The historic Salt Lake City Library was built in 1905 and closed in 1964 to make way for a larger library. In 1965 the structure was converted into a planetarium. Extensive modifications took place in the rear sections to create space for a star chamber, resulting in the loss of many of the library's original architectural features. Vacant for almost five years, the National Historic Registered building was purchased by O.C. Tanner to serve as their flagship store. The building was completely renovated and upgraded to meet the new owner's needs. The renovation included a seismic upgrade and restoration of the exterior stone cladding, historic woodwork, cast iron columns, plaster walls and ceilings, and steel roof trusses. The building was upgraded with a spiral stair, a two-story glass wall, and modern electrical and mechanical systems. Reaveley Engineers implemented several creative structural solutions, including reinforcing masonry walls, lowering the basement two feet, temporary bracing of the building shell, new concrete shear walls, and load transfer beams, beams which allowed space for ducts and pipes to maximize ceiling height and strengthening of the existing framing.