Aon (Amoco) Center, Chicago

Architects: Edward Durell Stone, Associates The Perkins and Will Partnership.
83 Floors at 346m height.






Cladded with Marble, and this quickly proved to be an unsuitable cladding for the harsh Chicago winters. In 1974, just a year after completion, one of the marble slabs detached from the façade.

Later The entire Building is replaced with Granite.