Massive project could replace the Hynes if it is sold

The convention center authority envisions a 2.3 million-square-foot complex there

The plan to sell off the Hynes Convention Center raises a natural question: What would go in its place?

We now have a glimpse of what could go up on the nearly six-acre site — or at least what officials at the Massachusetts Convention Center Authority envision for the Back Bay location.

At a board meeting on Friday, the convention center authority discussed a new report showing the potential for a 2.3 million-square-foot project — largely consisting of office space, but also including shops and restaurants along with 650 housing units.

Think something on the scale of the John Hancock Tower — sorry, 200 Clarendon — but not quite as tall or narrow.

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