By the 1990s Dublin Corporation became active in the preservation of the Georgian buildings; among the results was the restoration of City Hall to its eighteenth-century interior (removing Victorian and Edwardian additions and rebuilds), and the replacement of Nelson's Pillar (a monument on O'Connell Street which had dominated the skyline until being blown up in 1966 by republicans) by a new Spire of Dublin, the world's tallest sculpture, on the site of the old Pillar and which could be seen throughout the city.