Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The National and Kapodistrian University of Athens (Greek: ), usually referred to simply as the University of Athens, is the oldest university in Southeast Europe[citation needed] and has been in continuous operation since its establishment in 1837. Today, it is the second-largest institution of higher learning in Greece, with more than fifty thousand undergraduate students. It is one of the top ranking universities in Greece, and ranked 177th in the world according to the Times Higher Education-QS World University Rankings 2009.