Thomas Heatherwick is an amazing artist and architect. He has some of the most innovative stuff I seen in a long, long time.
WIRED has a nice article on him:
http://www.wired.com/wired/archive/15.03/brightstuff.html

To create this outdoor sculpture at the Wellcome Trust in London, Heatherwick first made a 2-inch-long blob by pouring molten metal into water.

The three-story staircase, made from 55 tons of hot-rolled steel, arrived at Longchamp’s new SoHo boutique prebuilt, ready for installation. Acrylic-like PETG (polyethylene terephthalate glycol) panels based on aerospace windshields hang from the handrails.