South Station Tower is a skyscraper under construction in Boston, Massachusetts, the high-rise portion of a three-building development. Construction on Phase 1 of the project, a 51-story, 678-foot tower with offices and condominiums, started in January 2020 and is expected to take 4 years. It will be built atop Boston's historic South Station complex, an example of transit-oriented development. The overall project will include condominium units, office space, a parking structure, and possibly hotel space. The property was initially proposed by Hines Interests and TUDC, a subsidiary of Tufts University.