Single Form Single Form Single Form (BH 325) is a monumental bronze sculpture by the British artist Barbara Hepworth. It is her largest work, and one of her most prominent public commissions, displayed since 1964 in a circular water feature that forms a traffic island at the Headquarters of the United Nations in New York City, outside the United Nations Secretariat Building and the Dag Hammarskjöld Library. It is also the largest artwork cast by the Morris Singer foundry. Copies of a smaller version, Single Form (Memorial) (BH 314), are on public display outside the Johns Hopkins University's Paul H. Nitze School
Headquarters of the United Nations of the signs in the UN headquarters building are in those languages. The site of the UN headquarters has extraterritoriality status. This affects some law enforcement where UN rules override the laws of New York City, but it does not give immunity to those who commit crimes there. In addition, the United Nations Headquarters remains under the jurisdiction and laws of the United States, although a few members of the UN staff have diplomatic immunity and so cannot be prosecuted by local courts unless the diplomatic immunity is waived by the Secretary-General. In 2005, Secretary-General Kofi Annan waived the immunity