Installed in 2014, the flowers are actually an interactive installation called ‘Warde’. These 30-feet tall man-made flora bloom and wilt depending on people that frequent the square. Stand under the shade and the flowers’ bright red petals come to life. Leave the shade and they’ll automatically deflate and wait for its next pedestrian.
The 4 public sculptures also interact with the trams that pass by, providing both light and shade for weary commuters.
Check out more pictures and article at http://www.lostateminor.com/2015/11/09/massive-flowers-suddenly-bloom-when-you-stand-under-their-shade/