International organisations based in Vienna, part 1: CTBTO
CTBTO, the “Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization” is based in Vienna.
CTBTO headquarters are located at the Vienna International Centre, the UN campus.
The Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTBTO Preparatory Commission) is an international organization established by the States Signatories to the Treaty on 19 November 1996. It carries out the necessary preparations for the effective implementation of the Treaty, and prepares for the first session of the Conference of the States Parties to the Treaty.
