This is not a country but place which issues its own postal things like stamps, postcards, postmarks - United Nations from Vienna!
The United Nations Office at Vienna (UNOV) is one of the four major UN office sites where several different UN agencies have a joint presence. The office complex is located in Vienna, the capital of Austria, and is part of the Vienna International Centre, a cluster of several major international organizations. The UNOV was established on 1 January 1980, and was the third such office established.
At the United Nations Office in Vienna there are many artistic works which are placed in the yard or in corridors.
I am very grateful to Cassandra!
