Pelli Clarke Pelli has revealed plans to build an office tower in Boston with a folded glass facade that resembles a "dramatic theatrical curtain".

Designed by Pelli Clarke Pelli Architects, the Connecticut firm behind San Francisco's Salesforce Tower, the building is set to rise 611 feet (186m metres) and feature a curved glass shell that appears to fold over itself.
"The exterior wall is a fluid form that accentuates the tower's height with the front facade opening like a dramatic theatrical curtain," Pelli Clarke Pelli Architects told Dezeen.

A curtain wall system reveals white pillars inside, as the Boston high-rise narrows towards the top. This irregular construction differentiates it from existing skyscrapers in the area. "One Congress' composition is curved and gently tapered, differing from the typical rectilinear towers of the Boston skyline," the firm said.

Developed by Carr Properties, HYM Investment Group LLC and National Real Estate Advisors, One Congress is currently under construction and slated for completion in 2020.
The architecture firm unveiled the design of the 44-storey office building called One Congress this week, as the tower broke ground at 1 Congress Street.

Once complete, it will comprise one million square feet (94,000 square meters) of office space.
A key element of the building is a one-acre (o.5-hectare) outdoor garden placed at its podium. Sloping berms define spaces for individual terraces that draw on the ...