The abandoned Sentinel building in Sandyford:  a beacon of the recession, it is   to be turned into 294 “office suites” following   Dún Laoghaire-Rathdown County Council’s granting of  permission. Photograph: Brenda Fitzsimons

The landmark 14-storey Sentinel building in Sandyford, south Dublin, which has been left as an unfinished shell for a decade, is to be redeveloped as (...)