<P> Refurbished Western Foyer and Accessibility improvements were commissioned on 17 November 2009, the largest building project completed since Utzon was re-engaged in 1999 . Designed by Utzon and his son Jan, the project provided improved ticketing, toilet and cloaking facilities . New escalators and a public lift enabled enhanced access for the disabled and families with prams . The prominent paralympian athlete Louise Sauvage was announced as the building's "accessibility ambassador" to advise on further improvements to aid people with disabilities . </P> <P> On 29 March 2016, an original 1959 tapestry by Le Corbusier (2.18 x 3.55 metres), commissioned by Utzon to be hung in the Sydney Opera House and called Les Dés Sont Jetés (The Dice Are Cast), was finally unveiled in situ after being owned by the Utzon family and held at their home in Denmark for over 50 years . The tapestry was bought at auction by the Sydney Opera House in June 2015 . It now hangs in the building's Western Foyer and is accessible to the public . </P> <P> In the second half of 2017, the Joan Sutherland Theatre was closed to replace the stage machinery and for other works . The Concert Hall is scheduled for work in 2020 - 2021 . </P> <P> In 1993, Constantine Koukias was commissioned by the Sydney Opera House Trust in association with REM Theatre to compose Icon, a large - scale music theatre piece for the 20th anniversary of the Sydney Opera House </P>

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