In time, the enlargement policy proved to be one the most dynamic European Union’s policies. Today, the prospect of membership for 34 countries (including here Turkey and Western Balkans) draws attention even more and start an important debate related with the values of EU. This paper address the current EU agenda on enlargement and also the historical and theoretical perspectives of the process in order to understand better the position on Turkey. It argues that with Turkey’s accession EU will expend for the first time outside the Europe’s geographical borders and by this will open the door for other non European countries. Based on this, Turkey is presented as a particular case with a big importance for the future of this policy and even for the EU’s future in general.