"Visa requirement for Turkish citizens
Turkey is among the countries whose nationals must be in possession of visas when crossing the external borders of the EU, according to Council Regulation No. 539/2001. The visa requirement constitutes an undue barrier to movement of persons. What is more, Turkish nationals encounter cumbersome procedures and grave problems in order to obtain Schengen visas. Just to point out a few: A long list of necessary documents that need to be submitted to the consulate or the intermediary agent, including a letter of invitation, birth certificate, land registry; and lengthy periods of waiting only to discover a visa with such a short duration of stay and mistreatment in the consulates."
More:Visa requirement for Turkish citizens - Hurriyet Daily News and Economic Review