Council of Europe conventions/treaties are also open for signature to non-member states, thus facilitating equal co-operation with countries outside Europe. The Council of Europe's most famous achievement is the European Convention on Human Rights, which was adopted in 1950 following a report by the Council of Europe's Parliamentary Assembly, and followed on from the United Nations 'Universal Declaration of Human Rights' (UDHR). The Convention created the European Court of Human Rights in Strasbourg. The Court supervises compliance with the European Convention on Human Rights and thus functions as the highest European court. It is to this court that Europeans can bring cases if
Council of Europe (international law) and co-operate on the basis of common values and common political decisions. Those conventions and decisions are developed by the member states working together at the Council of Europe. Both organisations function as concentric circles around the common foundations for European co-operation and harmony, with the Council of Europe being the geographically wider circle. The European Union could be seen as the smaller circle with a much higher level of integration through the transfer of powers from the national to the EU level. "The Council of Europe and the European Union: different roles, shared values." Council of Europe