200 Clarendon

I.M. Pei's mirrored blade — once it stopped shedding windows, a masterpiece.

Boston, MA 02116

Homestalgia Archive

Community memory · 1976–today · Aug 7, 2026

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I. M. Pei's office, with Henry Cobb as lead designer, gave Boston a 790-foot mirrored blade in 1976 — and during construction, panes of its double-glazed glass began falling to the sidewalk. All 10,344 windows were replaced. The tower also underwent structural reinforcement.

Source: Pei Cobb Freed & Partners, John Hancock Tower project record (completed 1976); Matthys Levy and Mario Salvadori, Why Buildings Fall Down (1992)

A place for memories, not attacks.

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A cinematic orbit of the actual roofline, lot and street — rendered from Google's aerial imagery of this exact address.

Satellite view of 200 Clarendon St, Boston, MA, 02116

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