To the north of the library, where an Athletic Institute was originally to stand, a six-storey office block was built in 1988–89 by Leonard J. Multon & Partners. A footbridge connecting the library with Centenary Square was added as part of improvements to the square in 1988–89. The atrium was enclosed with a glass roof and screens by the City Architect's Department in 1989–91. The space below was named Paradise Forum, originally proposed as an alfresco eating and entertainment area, but eventually leased to property companies who sublet the units to shops and fast food outlet tenants. The uncompleted bus interchange became service areas for the tenants of Paradise Forum. In 1999 the whole of Paradise Forum was sold off to Argent Group.