This year, the Seaport District in Boston welcomed part of its largest development project in three decades. Now, The Benjamin is welcoming new tenants to its luxury, open floor plan units in the heart of the Seaport District. For the neighborhood, it is an answer to many prayers. The Seaport District has boomed with new retail and commercial developments for the better part of five years, and a team of developers from Berkshire Group, WS Development, and Boston Global Investors saw a need for more housing.