United Nations Secretariat Building United Nations Secretariat Building The United Nations Secretariat Building is a tall skyscraper and the centerpiece of the headquarters of the United Nations, located in the Turtle Bay in Midtown Manhattan area of Manhattan, in New York City. The lot where the building stands is considered United Nations territory, although it remains part of the United States. It is the first skyscraper in New York City to use a curtain wall. The groundbreaking ceremony for the Secretariat Building occurred on September 14, 1948. A consortium of four contracting companies from Manhattan and Queens were selected to construct the Secretariat Building
Headquarters of the United Nations the complex opened in 1950, were expected to take about 7 years to complete. When completed the complex is also expected to be more energy efficient and have improved security. A temporary $140 million "North Lawn Building" was built to house the United Nations' "critical operations" while renovations proceeded. Work began on May 5, 2008, but the project was delayed for a while. By 2009 the cost of the work had risen from $1.2 billion to $1.6 billion with some estimates saying it would take up to $3 billion. Officials hoped the renovated buildings would achieve a LEED Silver rating.