https://www.bis.org/about/headquart-en.pdf
Article 1
Legal personality
The Swiss Federal Council acknowledges the international
legal personality and the legal capacity within Switzerland of the
Bank for International Settlements (hereinafter referred to as
“the Bank”).
Article 2
Freedom of action of the Bank
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The Swiss Federal Council shall guarantee to the Bank
the autonomy and freedom of action to which it is entitled as an
international organisation.
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In particular, it shall grant to the Bank, as well as to its
member institutions in their relations with the Bank, absolute
freedom to hold meetings, including freedom of discussion and
decision.
Article 3
Inviolability
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The buildings or parts of buildings and surrounding land
which, whoever may be the owner thereof, are used for the
purposes of the Bank shall be inviolable. No agent of the Swiss
public authorities may enter therein without the express consent
Headquarters Agreement with Switzerland 37
of the Bank. Only the President,3 the General Manager of the
Bank, or their duly authorised representative shall be competent
to waive such inviolability.
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The archives of the Bank and, in general, all documents
and any data media belonging to the Bank or in its possession,
shall be inviolable at all times and in all places.
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The Bank shall exercise supervision of and police power
over its premises.
Article 4
Immunity from jurisdiction and execution
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The Bank shall enjoy immunity from jurisdiction, save:
(a) to the extent that such immunity is formally waived in
individual cases by the President,3 the General Manager