John Hancock Tower

The Hancock and 200 Clarendon


he tower was designed by Henry N. Cobb of the firm I. M. Pei & Partners and was completed in 1976. It has been the tallest building in Boston and New England since 1976. The building is widely known for its prominent structural flaws, including an analysis that the entire building could overturn under certain wind loads—as well as a prominent design failure of its signature blue windows, which allowed any of the 500-lb. window panes to detach and fall—up to the full height of the building. In 1977, the American Institute of Architects presented the firm with a National Honor Award for the building, and in 2011 conferred on it the Twenty-five Year Award.

Constructed, 1976


Old - AIA National Honor Award in 1977
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