During the Kennedy administration, a group of Boston businessmen led by a millionaire dairy farmer hatched an audacious plan. They proposed building an experimental city of the future on made land, piers, and floating platforms connecting Columbia Point in Dorchester with Thompson Island in Boston Harbor. This new city would be the site of a World’s Fair timed to celebrate America’s Bicentennial, and the site would then be reused to solve all of Boston’s problems with housing, race relations, environmental damage, and economic decline. Spoiler alert: We don’t have a futuristic city connecting Columbia Point with the Harbor Islands. But the story of how a plan ripped straight out of science fiction almost came to be built in Boston reveals a lot about an optimistic city torn apart by the busing crisis.