Editing Chatham House (section)

==Overview==
The Royal Institute of International Affairs has its headquarters in central London at 10 [[St James's Square]], which is known as Chatham House. It is a [[Grade I listed]] 18th-century building that was designed in part by [[Henry Flitcroft]] and was occupied by three British prime ministers, including [[William Pitt, 1st Earl of Chatham]], whose name became associated with the house.<ref>Michela Rosso, "Georgian London revisited." ''The London Journal'' 26.2 (2001): 35–50.</ref> Canadian [[philanthropist]]s Lieutenant-Colonel [[Reuben Wells Leonard]] and Kate Rowlands Leonard purchased the property in 1923 and then donated the building to the fledgling institute as its headquarters.<ref>{{cite book |last1=Ziff |first1=Bruce H. |title=Unforeseen Legacies: Reuben Wells Leonard and the Leonard Foundation Trust |date=1 January 2000 |publisher=University of Toronto Press |page=52 |isbn=9780802083685 |url=https://books.google.com/books?id=S7L-VKEh-i4C&pg=PA52 |access-date=10 July 2020 |archive-date=30 July 2023 |archive-url=https://web.archive.org/web/20230730204055/https://books.google.com/books?id=S7L-VKEh-i4C&pg=PA52 |url-status=live }}</ref> As a result, the Chatham House name is used as a [[metonym]] for the institute as a whole.

Chatham House accepts individual members, as well as members from [[corporations]], [[academic institutions]], and [[NGOs]].<ref>{{cite web |url=http://www.chathamhouse.org/become-member |title=Become a member |work=Chatham House |access-date=22 January 2015 |archive-date=21 January 2015 |archive-url=https://web.archive.org/web/20150121203318/http://www.chathamhouse.org/become-member |url-status=live }}</ref>