What was before – What once occupied the site of today’s Pru?

Seen from any approach to Boston, the Prudential Tower has figured prominently into Boston's skyline since its construction in the early 1960's.  And, with 52 floors, the Pru stands as Boston's second-tallest building, just behind the John Hancock Tower's sixty.  The Tower, completed in 1964, rises 749 feet, or, with its radio mast (pictured atop…Read more What was before – What once occupied the site of today’s Pru?