Meet the artist: Faye HeavyShield

How do you stick 20,000 letter-faced coins to a gallery wall? With graph paper, 20,000 pinpricks and a lot of concentration. Watch as Micah Lexier's I Am the Coin is installed at the National Gallery of Canada...

In this time-lapse video, the NGC's Technical Services team takes down Ai Weiwei's majestic and towering sculpture, Tree (2009–2010), which was recently on view in the NGC's Contemporary Galleries.