Aviva Tower
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The Aviva Tower (previously known as St Helen's or the Commercial Union building) is a skyscraper in the City of London. It is 118 metres tall and has 23 floors, as well as podium and mezzanine levels. It was completed in 1969. It was damaged in the Bishopsgate bombings by Irish terrorists, and completely re-glazed and re-clad as a result. It was designed by the architectural firm of GMW (Frank Gollins, James Melvin & Edmund Ward), the stark rectilinear geometry and detailing of the building was influenced by Ludwig Mies van der Rohe.