Hello to all.
To keep the interests of the enthusiasts going here is a new slideshow. 5.43 min
The Opera House is Sydney's unique building; Jørn Utzon's roof construction was inspired by nature in the form of spheres: also referred to as the sails of the Opera House.
Vivid Sydney is an annual festival of light and music that's concentrated around and in the Opera House first started in 2009 with projections of images on the sails. https://youtu.be/QcM7lvjlbUA
Bill (William Henry on YouTube)