


The nine-story concrete and glass building will house offices for InterActiveCorp, a group of Internet businesses with a focus on travel.
To reduce the overall scale Frank Gehry has broken the building down into 5 individual modules and set back the three upper penthouse towers to allow for rooftop terraces.
Each of the modules, stacked in two tiers, is formed by giving a five-story rectangular solid a one-quarter twist. The edges of the rectangles become curves.
On the side facing the river, the elevation will resemble a row of five glass town houses, crowned with three stretch penthouses. The glass will be insulated and have special coatings and patterned ceramic frits to improve energy efficiency.

Frank Gehry early sketch concept of The IAC Building.

http://www.arcspace.com/architects/gehry/iac/iac.html
http://www.iacbuilding.com