These black balls floating in Allen Lambert Galleria in BCE Place were an art installation by Xavier Veilhan called Le Grand Mobile at the LuminaTO art festival in Toronto. Santiago Calatrava designed the metal ceiling structure.
This panoramic photo contains 9 photos stitched together in Photoshop CS3.
Veilhan.net
Calatrava.com
Wvs.topleftpixel.com/xavier veilhan – santiago calatrava
Wonderful architecture and photo!