"Ice Watch," Olafur Eliasson, 2014.

Twelve large blocks of ice, transported from Greenland, were displayed in a clock formation and left to melt. This work was first staged in Copenhagen, and later in Paris, both times in conjunction with UN meetings about climate change. Photo 1 of 8 in Eight of Our Favorite Works by Artist Olafur Eliasson by Allie Weiss

Eight of Our Favorite Works by Artist Olafur Eliasson

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"Ice Watch," Olafur Eliasson, 2014.

Twelve large blocks of ice, transported from Greenland, were displayed in a clock formation and left to melt. This work was first staged in Copenhagen, and later in Paris, both times in conjunction with UN meetings about climate change.