The steel framing elements are on the outside and courtyard walls, and serve as mullion-like separators between the window units.

The interior floor plan is broken up by service cores, which house stairwells, elevators, and restrooms as well as other building infrastructure.

There are escalators at roughly opposite ends of the building, providing additional access between the floors.

[2] The building was designed by Gordon Bunshaft of Skidmore, Owings and Merrill,[3] on a 280-acre (110 ha) campus, and was completed in 1957.

According to the architecture firm, "The bucolic site, campus-like plan, and extensive amenities, including a full service cafeteria and after-hours programs, reflected a desire to offer a highly civilized and satisfying office environment to Connecticut General employees.