The new agreement does not cover social security issues, for which the United Nations and Austria will soon negotiate a new agreement. At the invitation of the Austrian government, the International Atomic Energy Agency (IAEA) and the United Nations Industrial Development Organization (UNIDO) established their headquarters in Vienna in 1957 and 1967 respectively. In the 1970s, the government established a permanent residence for these two organizations: the Vienna International Centre (VIC). In order to make full use of the new entity, other Un units were transferred from New York and Geneva to Vienna. Many of them have been consolidated at the United Nations Office in Vienna (UNOV). Transferred from Beirut in 1978, the United Nations Relief and Works Agency for Palestine Refugees in the West (UNRWA) had its temporary headquarters at the VIC before being transferred to Gaza City in 1997. In March 1997, the Preparatory Commission for the Comprehensive Nuclear-Test-Ban Treaty Organization (CTTO) was established at the VIC. The VIC was inaugurated on August 23, 1979. On 28 September 1979, the IAEA and Austria, as well as between the United Nations and Austria, signed separate agreements on behalf of UNIDO and other UN agencies in Vienna. For 99 years, the Austrian government sold the vicar complex to the United Nations and the IAEA for the symbolic rent of an Austrian shilling (equivalent to 0.07 euros today). The new agreement – and a new parallel headquarters agreement signed today by UNIDO – consolidates a large number of legal agreements between the Austrian government and the Vienna-based UN offices, covering issues such as the sharing of the Vienna International Centre and the status of UN staff in Austria. Other issues clarified in the agreement include the privileges and immunities of United Nations observer missions, intergovernmental organizations and observers of non-member states based in Vienna. Through separate agreements, the new agreement will also apply to the United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) and its collaborators in Austria.