On Either Side

These skyscrapers arranged the vertical cores on either side of the tower:

Source: wikipedia.org

Cecil and Ida Green Center for Earth Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts, USA, 1964 designed by Pei Cobb Freed & Partners

the 277-foot-high tower was a unique experiment in poured-in-place architectural concrete high-rise construction. The load-bearing walls permit column-free interiors (48' x 93') for maximum flexibility in accommodating research in geology, geophysics, geochemistry, oceanography and meteorology. -- architect's web site

Source: wikipedia.org

Federal Reserve Bank of Boston, Boston, Massachusetts, USA, 1976 designed by Hugh Stubbins & Associates

The Boston Fed is in a distinctive 614-foot (187 m) tall, 32-story building, located at 600 Atlantic Avenue in Boston. The building, designed by architecture firm Hugh Stubbins & Associates, is suspended between two towers on either side. -- Wikipedia

Source: gorsler.net

Christian Science Center Church Administration Building, Boston, Massachusetts, USA, 1990 designed by Pei Cobb Freed & Partners

This sprawling urban complex is part of a three-phase master plan to provide the world headquarters of the Christian Science Church with a more open and welcoming environment while simultaneously regenerating the surrounding community. It is a work of repose that attempts to resolve structure, form and space through the unifying element of architecture.  -- architect's web site