Renovating the World: The U.N. Under Construction

The Temporary North Lawn Building
Many of the active meetings and conferences among U.N. delegates, which will include the General Assembly in 2012, now happen here. "It's a very busy building," Adlerstein says. The renovations are currently on schedule and set to finish in 2013, when the North Lawn Building will be torn down.

• Portraits from the U.N. General Assembly