The Empire State Building is to receive a $20 million (£12.83 million) retro-fit in order to improve its energy efficiency.
Built in 1931, the building is still the tallest in New York, after the World Trade Centre twin towers were destroyed in a terrorist attack.
However, Andrew Malkin, president of the building's owners, Malkin Holdings, told the Guardian that the building has fallen into disrepair and needed to be fixed.
The energy saving measures are part of a $550 million overall renovation project.
Mr Malkin told the news source: "If we don't reduce our energy consumption, we will lose money and be less competitive against China, India, Brazil and the other expanding economies."
The energy efficiency measures, which include replacing the building's windows, are expected to cut the total energy use of the construction by around 40 per cent.
Posted by Emily Thomas
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