Sia Hochhaus, Zurich, Switzerland

Romero and Schaefle
Date Built
Refurbished 2007
The SIA Tower was originally completed in 1970 to a design by Hans von Meyerburg for the Swiss Engineers and Architects Association, Schweizerischen Ingenieur- und Architektenvereins.  It is composed of a tower that orients to both the road on the front, and the Limmat river on the back and an annex which forms a floating body that lets the landscape flow through the building.  The building that I photographed in 2015 bears little resemblance to the 1970 version.  As the world-architects website explains, "... The SIA high-rise in Zurich has been completely renovated with a budget of CHF 35 million. The building with 13 floor-stations and 46 m height is barely recognizable after the renovation because the facades were greatly changed. The new skin is made up of a curtain facade with double alternately forwards and backwards tilted glasses."